{"id":"CVE-2026-27447","aliases":["ALPINE-CVE-2026-27447","AZL-81822","BELL-CVE-2026-27447","CLSA-2026-1778141904","CLSA-2026-1778142413","CLSA-2026-1778253061","CLSA-2026-1778662564","CLSA-2026-1779215547","CLSA-2026-1779215980","CLSA-2026-1779436377","CLSA-2026-1780067463","DEBIAN-CVE-2026-27447","EUVD-2026-18863","GHSA-v987-m8hp-phj9","MGASA-2026-0201","OESA-2026-1932","OESA-2026-1933","OESA-2026-2018","OESA-2026-2019","OESA-2026-2020","OESA-2026-2021","RHSA-2026:8814","ROOT-OS-DEBIAN-12-CVE-2026-27447","ROOT-OS-DEBIAN-13-CVE-2026-27447","SUSE-SU-2026:21787-1","SUSE-SU-2026:21836-1","SUSE-SU-2026:21850-1","SUSE-SU-2026:21871-1","SUSE-SU-2026:2718-1","SUSE-SU-2026:2732-1","UBUNTU-CVE-2026-27447","USN-8405-1","openSUSE-SU-2026:10589-1","openSUSE-SU-2026:20812-1"],"status":"published","title":"OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","severity":{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00295,"percentile":0.22298,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-863"],"published":"2026-04-03T21:11:59Z","modified":"2026-10-28T11:10:02Z","fixes":[{"ecosystem":"Alpine:v3.20","package":"cups","fixed_in":["2.4.18-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"cups","fixed_in":["2.4.18-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"cups","fixed_in":["2.4.18-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"cups","fixed_in":["2.4.18-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"cups","fixed_in":["2.4.18-r0"],"sources":["osv"]},{"ecosystem":"Azure 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In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T21:11:59.734Z","modified":"2026-04-06T18:50:21.909Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:19:49.199185Z"}],"euvd":[{"id":"EUVD-2026-18863","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T21:11:59Z","modified":"2026-04-06T18:50:21Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:25:15.380284Z"}],"nvd":[{"id":"CVE-2026-27447","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T22:16:25.193Z","modified":"2026-07-24T22:10:00.14Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:12:13.1424Z"}],"osv":[{"id":"ALPINE-CVE-2026-27447","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T22:16:25.193Z","modified":"2026-10-01T02:17:49.221177783Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:27:50.269992Z"},{"id":"BELL-CVE-2026-27447","status":"published","published":"2026-04-04T06:09:29.96249Z","modified":"2026-05-04T07:15:17.755365Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:23.315185Z"},{"id":"CVE-2026-27447","title":"OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T21:11:59.734Z","modified":"2026-10-28T11:10:02.149222935Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T15:45:00.180685Z"},{"id":"DEBIAN-CVE-2026-27447","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T22:16:25.193Z","modified":"2026-10-01T03:03:01.271599827Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:53.877573Z"},{"id":"OESA-2026-1932","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd\u0026apos;s Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.(CVE-2026-39316)","status":"published","published":"2026-04-17T11:10:56Z","modified":"2026-08-18T01:19:39.260202204Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-1933","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd\u0026apos;s Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.(CVE-2026-39316)","status":"published","published":"2026-04-17T11:10:56Z","modified":"2026-08-18T01:19:39.255323149Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2018","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)","status":"published","published":"2026-04-25T11:11:01Z","modified":"2026-08-18T01:19:48.459543901Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2019","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)","status":"published","published":"2026-04-25T11:11:01Z","modified":"2026-08-18T01:19:48.473273064Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2020","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd\u0026apos;s Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.(CVE-2026-39316)","status":"published","published":"2026-04-25T11:11:01Z","modified":"2026-08-18T01:19:48.506340676Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"OESA-2026-2021","title":"cups security update","description":"CUPS is the standards-based, open source printing system developed by Apple Inc. for UNIX®-like operating systems. CUPS uses the Internet Printing Protocol (IPP) to support printing to local and network printers.\r\n\r\nSecurity Fix(es):\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.(CVE-2026-27447)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, the RSS notifier allows .. path traversal in notify-recipient-uri (e.g., rss:///../job.cache), letting a remote IPP client write RSS XML bytes outside CacheDir/rss (anywhere that is lp-writable). In particular, because CacheDir is group-writable by default (typically root:lp and mode 0770), the notifier (running as lp) can replace root-managed state files via temp-file + rename(). This PoC clobbers CacheDir/job.cache with RSS XML, and after restarting cupsd the scheduler fails to parse the job cache and previously queued jobs disappear. At time of publication, there are no publicly available patches.(CVE-2026-34978)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, there is a heap-based buffer overflow in the CUPS scheduler when building filter option strings from job attribute. At time of publication, there are no publicly available patches.(CVE-2026-34979)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page-border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.(CVE-2026-34980)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a local unprivileged user can coerce cupsd into authenticating to an attacker-controlled localhost IPP service with a reusable Authorization: Local ... token. That token is enough to drive /admin/ requests on localhost, and the attacker can combine CUPS-Create-Local-Printer with printer-is-shared=true to persist a file:///... queue even though the normal FileDevice policy rejects such URIs. Printing to that queue gives an arbitrary root file overwrite; the PoC below uses that primitive to drop a sudoers fragment and demonstrate root command execution. At time of publication, there are no publicly available patches.(CVE-2026-34990)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, an integer underflow vulnerability in _ppdCreateFromIPP() (cups/ppd-cache.c) allows any unprivileged local user to crash the cupsd root process by supplying a negative job-password-supported IPP attribute. The bounds check only caps the upper bound, so a negative value passes validation, is cast to size_t (wrapping to ~2^64), and is used as the length argument to memset() on a 33-byte stack buffer. This causes an immediate SIGSEGV in the cupsd root process. Combined with systemd\u0026apos;s Restart=on-failure, an attacker can repeat the crash for sustained denial of service.(CVE-2026-39314)\n\nOpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, a use-after-free vulnerability exists in the CUPS scheduler (cupsd) when temporary printers are automatically deleted. cupsdDeleteTemporaryPrinters() in scheduler/printers.c calls cupsdDeletePrinter() without first expiring subscriptions that reference the printer, leaving cupsd_subscription_t.dest as a dangling pointer to freed heap memory. The dangling pointer is subsequently dereferenced at multiple code sites, causing a crash (denial of service) of the cupsd daemon. With heap grooming, this can be leveraged for code execution.(CVE-2026-39316)","status":"published","published":"2026-04-25T11:11:01Z","modified":"2026-08-18T01:19:48.548276771Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","level":"medium"}],"updated_at":"2026-11-02T15:52:46.087701Z"},{"id":"RHSA-2026:8814","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","status":"published","published":"2026-04-20T10:12:14Z","modified":"2026-10-14T10:33:09Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2026-27447","title":"CVE-2026-27447 in cups - Patched by Root","description":"Root has patched CVE-2026-27447 in the cups package for Root:Debian:12. Multiple fixed versions available.","status":"published","published":"2026-08-25T08:44:39Z","modified":"2026-08-26T01:10:40.893764657Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:31.773105Z"},{"id":"ROOT-OS-DEBIAN-13-CVE-2026-27447","title":"CVE-2026-27447 in cups - Patched by Root","description":"Root has patched CVE-2026-27447 in the cups package for Root:Debian:13. Multiple fixed versions available.","status":"published","published":"2026-08-24T06:48:45Z","modified":"2026-08-24T08:15:06.104282627Z","cvss":[{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:33.415244Z"},{"id":"UBUNTU-CVE-2026-27447","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T22:16:00Z","modified":"2026-07-21T18:30:11.781070358Z","cvss":[{"version":"3.1","score":4.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:N","level":"medium"},{"version":"3.1","score":6.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:56:08.726452Z"},{"id":"AZL-81822","title":"CVE-2026-27447 affecting package cups for versions less than 2.4.17-1","description":"OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, CUPS daemon (cupsd) contains an authorization bypass vulnerability due to case-insensitive username comparison during authorization checks. The vulnerability allows an unprivileged user to gain unauthorized access to restricted operations by using a user with a username that differs only in case from an authorized user. At time of publication, there are no publicly available patches.","status":"published","published":"2026-04-03T22:16:25Z","modified":"2026-08-28T17:56:55.658948Z","updated_at":"2026-11-02T15:28:10.335477Z"},{"id":"CLSA-2026-1778141904","title":"cups: Fix of CVE-2026-27447","description":"- CVE-2026-27447: fix authorization bypass via case-insensitive username comparison in scheduler","status":"published","published":"2026-05-07T08:18:29Z","modified":"2026-06-01T00:33:26.020575159Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778142413","title":"cups: Fix of CVE-2026-27447","description":"- CVE-2026-27447: fix authorization bypass via case-insensitive username comparison in scheduler","status":"published","published":"2026-05-08T11:36:08Z","modified":"2026-06-01T00:33:17.082493401Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778253061","title":"Fix CVE(s): CVE-2026-27447","description":"   * SECURITY UPDATE: fix authorization bypass in cupsd caused by\n     case-insensitive comparison of local user and group names.\n     - debian/patches/CVE-2026-27447.patch: compare usernames against the\n       canonical pw_name from getpwnam() with strcmp() in\n       cupsdCheckGroup() and cupsdIsAuthorized() in scheduler/auth.c;\n       include the upstream follow-up \"Fix unauthenticated print policies\"\n       (Issue #1557) so CUPSD_AUTH_NONE policies still match users that\n       do not have a local account.\n     - CVE-2026-27447.","status":"published","published":"2026-05-08T15:13:47Z","modified":"2026-06-04T10:03:12.834253Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1778662564","title":"cups: Fix of CVE-2026-27447","description":"- CVE-2026-27447: fix authorization bypass via case-insensitive username comparison in scheduler","status":"published","published":"2026-05-13T08:56:08Z","modified":"2026-06-01T00:33:19.103229092Z","updated_at":"2026-11-02T15:43:44.737408Z"},{"id":"CLSA-2026-1779215547","title":"cups: Fix of 2 CVEs","description":"- CVE-2026-27447: fix authorization bypass via case-insensitive username comparison in scheduler","status":"published","published":"2026-06-29T10:44:53Z","modified":"2026-10-26T09:31:57.63323472Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"CLSA-2026-1779215980","title":"cups: Fix of 2 CVEs","description":"- CVE-2026-27447: fix authorization bypass via case-insensitive username comparison in scheduler","status":"published","published":"2026-06-29T10:20:35Z","modified":"2026-10-26T09:31:54.55020258Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"CLSA-2026-1779436377","title":"cups: Fix of CVE-2026-27447","description":"- CVE-2026-27447: fix authorization bypass in cupsd by replacing case-insensitive\n  username comparisons with byte-exact strcmp against pw-\u003epw_name; also include\n  upstream follow-up commit 849fba7d (\"Fix unauthenticated print policies\",\n  Issue #1557) to restore behavior for CUPSD_AUTH_NONE policies with named ACLs","status":"published","published":"2026-05-22T07:53:04Z","modified":"2026-06-01T00:32:54.399616943Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"CLSA-2026-1780067463","title":"cups: Fix of CVE-2026-27447","description":"- CVE-2026-27447: fix authorization bypass in cupsd caused by\n  case-insensitive comparison of local user and group names; include\n  upstream Issue #1557 follow-up to avoid breaking AuthType None\n  policies for non-local accounts","status":"published","published":"2026-05-29T15:11:08Z","modified":"2026-10-26T09:30:16.240233708Z","updated_at":"2026-11-02T15:43:45.090939Z"},{"id":"MGASA-2026-0201","title":"Updated cups packages fix security vulnerabilities","description":"CVE-2026-27447, Authorization bypass via case-insensitive group-member\nlookup.\nCVE-2026-39314, Integer underflow in `_ppdCreateFromIPP` causes root\ncupsd crash via negative `job-password-supported`\nCVE-2026-39316, Use-after-free in `cupsdDeleteTemporaryPrinters` via\ndangling subscription pointer\nCVE-2026-34978, Path traversal in RSS notify-recipient-uri enables file\nwrite outside CacheDir/rss (and clobbering of job.cache)\nCVE-2026-34979, Heap overflow in `get_options()`\nCVE-2026-34980, Shared PostScript queue lets anonymous Print-Job\nrequests reach `lp`code execution over the network\nCVE-2026-34990, Local print admin token disclosure using temporary\nprinters.\nHeap out-of-bounds read in SNMP supply-level polling leaks stack memory\nto authenticated users.\nOut-of-bounds heap read in cupsdSetPrinterAttr marker-types parsing  \n","status":"published","published":"2026-06-12T23:28:19Z","modified":"2026-06-12T23:49:05.243507165Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2026:10589-1","title":"cups-2.4.17-1.1 on GA media","description":"These are all security issues fixed in the cups-2.4.17-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-04-21T00:00:00Z","modified":"2026-04-22T08:16:19.33819Z","updated_at":"2026-11-02T16:58:38.415593Z"},{"id":"openSUSE-SU-2026:20812-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n- CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory disclosure\n  (bsc#1263116).\n\nChanges for cups:\n\n- Version upgrade to 2.4.19.\n\n- Version upgrade to 2.4.18.\n\n- Version upgrade to 2.4.17:\n\n * The scheduler followed symbolic links when cleaning out\n its temporary directory (Issue #1448)\n * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape\n more characters.\n * Updated man page `cancel` (Issue #984)\n * Updated `cupsRasterReadHeader` to validate more of the\n page header values (Issue #1501)\n * Fixed an issue with the class/printer CGI name checking.\n * Fixed infinite loop in `http_write()` on busy print servers\n (Issue #827)\n * Fixed potential TLS blocking issues (Issue #1128)\n * Fixed a job history bug in the scheduler (Issue #1440)\n * Fixed notifier logging bug that would result in nul bytes\n getting into the log (Issue #1450)\n * Fixed possible use-after-free in `cupsdReadClient()`\n (Issue #1454)\n * Fixed a document format bug in the IPP backend (Issue #1457)\n * Fixed DRAIN_OUTPUT race condition (Issue #1461)\n * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions\n were mixed.\n * Fixed the mapping of supply type keywords to SNMP names.\n * Fixed a bug in the IPP backend when SNMP was disabled.\n * Fixed a crash bug in the rastertoepson filter.\n * Fixed a bug in cgiCheckVariables.\n * Fixed handling read/write errors with OpenSSL (Issue #1506)\n * Fixed handling rehandshake error in `_httpTLSRead`\n (Issue #1508)\n * Fixed a debug printf bug on Windows (Issue #1529)\n * Fixed a recursion issue with encoding of nested collections\n (Issue #1539)\n * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`,\n and `MaxRequestSize` directives in \"cupsd.conf\" (Issue #1540)\n * Fixed a parsing bug in `ipptool` (Issue #1542)\n * Fixed blank line detection in the `rastertolabel` filter\n (Issue #1545)\n * Fixed `httpPeek` edge case on compressed streams\n","status":"published","published":"2026-05-26T12:19:57Z","modified":"2026-05-29T18:24:10.427785997Z","updated_at":"2026-11-02T16:58:41.463445Z"},{"id":"SUSE-SU-2026:21787-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n- CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory disclosure\n  (bsc#1263116).\n\nChanges for cups:\n\n- Version upgrade to 2.4.19\n","status":"published","published":"2026-05-26T12:01:22Z","modified":"2026-05-28T18:24:07.160507943Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:21836-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n- CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory disclosure\n  (bsc#1263116).\n\nChanges for cups:\n\n- Version upgrade to 2.4.19.\n\n- Version upgrade to 2.4.18.\n\n- Version upgrade to 2.4.17:\n\n * The scheduler followed symbolic links when cleaning out\n its temporary directory (Issue #1448)\n * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape\n more characters.\n * Updated man page `cancel` (Issue #984)\n * Updated `cupsRasterReadHeader` to validate more of the\n page header values (Issue #1501)\n * Fixed an issue with the class/printer CGI name checking.\n * Fixed infinite loop in `http_write()` on busy print servers\n (Issue #827)\n * Fixed potential TLS blocking issues (Issue #1128)\n * Fixed a job history bug in the scheduler (Issue #1440)\n * Fixed notifier logging bug that would result in nul bytes\n getting into the log (Issue #1450)\n * Fixed possible use-after-free in `cupsdReadClient()`\n (Issue #1454)\n * Fixed a document format bug in the IPP backend (Issue #1457)\n * Fixed DRAIN_OUTPUT race condition (Issue #1461)\n * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions\n were mixed.\n * Fixed the mapping of supply type keywords to SNMP names.\n * Fixed a bug in the IPP backend when SNMP was disabled.\n * Fixed a crash bug in the rastertoepson filter.\n * Fixed a bug in cgiCheckVariables.\n * Fixed handling read/write errors with OpenSSL (Issue #1506)\n * Fixed handling rehandshake error in `_httpTLSRead`\n (Issue #1508)\n * Fixed a debug printf bug on Windows (Issue #1529)\n * Fixed a recursion issue with encoding of nested collections\n (Issue #1539)\n * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`,\n and `MaxRequestSize` directives in \"cupsd.conf\" (Issue #1540)\n * Fixed a parsing bug in `ipptool` (Issue #1542)\n * Fixed blank line detection in the `rastertolabel` filter\n (Issue #1545)\n * Fixed `httpPeek` edge case on compressed streams\n","status":"published","published":"2026-05-26T12:30:35Z","modified":"2026-05-31T18:24:29.118006865Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:21850-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n- CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory disclosure\n  (bsc#1263116).\n\nChanges for cups:\n\n- Version upgrade to 2.4.19.\n\n- Version upgrade to 2.4.18.\n\n- Version upgrade to 2.4.17:\n\n * The scheduler followed symbolic links when cleaning out\n its temporary directory (Issue #1448)\n * Updated `cupsFileGetConf` and `cupsFilePutConf` to escape\n more characters.\n * Updated man page `cancel` (Issue #984)\n * Updated `cupsRasterReadHeader` to validate more of the\n page header values (Issue #1501)\n * Fixed an issue with the class/printer CGI name checking.\n * Fixed infinite loop in `http_write()` on busy print servers\n (Issue #827)\n * Fixed potential TLS blocking issues (Issue #1128)\n * Fixed a job history bug in the scheduler (Issue #1440)\n * Fixed notifier logging bug that would result in nul bytes\n getting into the log (Issue #1450)\n * Fixed possible use-after-free in `cupsdReadClient()`\n (Issue #1454)\n * Fixed a document format bug in the IPP backend (Issue #1457)\n * Fixed DRAIN_OUTPUT race condition (Issue #1461)\n * Fixed a bug when then `ippFindXxx` and `ippSetXxx` functions\n were mixed.\n * Fixed the mapping of supply type keywords to SNMP names.\n * Fixed a bug in the IPP backend when SNMP was disabled.\n * Fixed a crash bug in the rastertoepson filter.\n * Fixed a bug in cgiCheckVariables.\n * Fixed handling read/write errors with OpenSSL (Issue #1506)\n * Fixed handling rehandshake error in `_httpTLSRead`\n (Issue #1508)\n * Fixed a debug printf bug on Windows (Issue #1529)\n * Fixed a recursion issue with encoding of nested collections\n (Issue #1539)\n * Fixed parsing of the `LimitRequestBody`, `MaxLogSize`,\n and `MaxRequestSize` directives in \"cupsd.conf\" (Issue #1540)\n * Fixed a parsing bug in `ipptool` (Issue #1542)\n * Fixed blank line detection in the `rastertolabel` filter\n (Issue #1545)\n * Fixed `httpPeek` edge case on compressed streams\n","status":"published","published":"2026-05-26T12:30:35Z","modified":"2026-06-02T18:24:27.004963474Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:21871-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-34990: Local print admin token disclosure using temporary printers (bsc#1261568).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n- CVE-2026-41079: crafted SNMP response can lead to stack-based out-of-bounds read and sensitive memory disclosure\n  (bsc#1263116).\n\nChanges for cups:\n\n- Version upgrade to 2.4.19\n","status":"published","published":"2026-05-26T11:41:50Z","modified":"2026-06-03T18:24:32.09614154Z","updated_at":"2026-11-02T15:54:02.654057Z"},{"id":"SUSE-SU-2026:2718-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (bsc#1261742).\n","status":"published","published":"2026-07-01T10:23:34Z","modified":"2026-07-02T09:15:04.907966305Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"SUSE-SU-2026:2732-1","title":"Security update for cups","description":"This update for cups fixes the following issues\n\n- CVE-2026-27447: Authorization bypass via case-insensitive group-member lookup (bsc#1261572).\n- CVE-2026-34978: Path traversal in RSS notify-recipient-uri enables file write outside CacheDir/rss (bsc#1261571).\n- CVE-2026-34979: Heap overflow in `get_options()` (bsc#1261570).\n- CVE-2026-34980: Shared PostScript queue lets anonymous Print-Job requests reach `lp` code execution over the network\n  (bsc#1261569).\n- CVE-2026-39314: negative `job-password-supported` attribute can lead to a denial of service (bsc#1261743).\n- CVE-2026-39316: dangling subscription pointer can lead to a denial of service (1261742).\n","status":"published","published":"2026-07-02T17:41:32Z","modified":"2026-07-04T08:30:06.694888347Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"USN-8405-1","title":"cups vulnerabilities","description":"Ariel Silver discovered that CUPS incorrectly handled username comparisons\nduring authorization checks. A local attacker could possibly use this issue\nto gain unauthorized access to restricted operations. (CVE-2026-27447)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\nnotify-recipient-uri values in the RSS notifier. A remote attacker could\npossibly use this issue to overwrite lp-writable files and cause a denial\nof service. (CVE-2026-34978)\n\nJacob Newman discovered that CUPS incorrectly handled filter option strings\nwhen processing job attributes. An attacker could use this issue to cause\nCUPS to crash, resulting in a denial of service, or possibly execute\narbitrary code. (CVE-2026-34979)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\npage-border values in shared PostScript queues. A remote attacker could\npossibly use this issue to execute arbitrary code. (CVE-2026-34980)\n\nAsim Viladi Oglu Manizada discovered that CUPS incorrectly handled\nlocalhost authentication to attacker-controlled IPP services. A local\nattacker could possibly use this issue to overwrite arbitrary files\nand execute arbitrary code. (CVE-2026-34990)\n\nTomer Fichman discovered that CUPS incorrectly handled negative\njob-password-supported values. A local attacker could possibly use this\nissue to cause CUPS to crash, resulting in a denial of service.\n(CVE-2026-39314)\n\nTomer Fichman discovered that CUPS incorrectly handled temporary printer\ndeletion. An attacker could possibly use this issue to cause CUPS to crash,\nresulting in a denial of service, or to execute arbitrary code.\n(CVE-2026-39316)\n\nTomer Fichman discovered that CUPS incorrectly handled certain malformed\nSNMP responses. An attacker could possibly use this issue to obtain\nsensitive information. (CVE-2026-41079)","status":"published","published":"2026-06-08T15:51:32Z","modified":"2026-06-08T23:14:21.292502385Z","updated_at":"2026-11-02T16:58:25.103481Z"}]}}