{"id":"CVE-2026-49941","aliases":["DEBIAN-CVE-2026-49941","EUVD-2026-34298","GHSA-wvxw-q92g-9ghf","UBUNTU-CVE-2026-49941","openSUSE-SU-2026:10951-1"],"status":"published","title":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-07","score":0.00329,"percentile":0.26217,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1287","CWE-674"],"published":"2026-06-03T00:00:00Z","modified":"2026-10-28T02:30:32Z","fixes":[{"ecosystem":"Debian:13","package":"libnet-cidr-set-perl","fixed_in":["0.15-1+deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libnet-cidr-set-perl","fixed_in":["0.21-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-4","0.13-5","0.15-1","0.19-1","0.20-1","0.21-1","0.22-1","0.23-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.15-1+deb13u1"}]}],"versions":["0.15-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.21-1"}]}],"versions":["0.15-1","0.19-1","0.20-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-2"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-3"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-4","0.13-5"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.13-5","0.15-1","0.19-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19-1","0.20-1","0.21-1","0.22-1","0.23-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libnet-cidr-set-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.19-1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"perl-Net-CIDR-Set","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.210.0-1.1"}]}],"bundled":2}],"products":[{"vendor":"rrwo","product":"net::cidr::set"},{"vendor":"rrwo","product":"net\\"}],"references":[{"url":"https://metacpan.org/release/RRWO/Net-CIDR-Set-0.21/changes","tags":["release-notes","Release Notes","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/04/11","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49941","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-wvxw-q92g-9ghf"},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49941.json","tags":["advisory"]},{"url":"https://github.com/robrwo/perl-Net-CIDR-Set","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-49941","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-49941","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-49941","tags":["report"]},{"url":"https://github.com/robrwo/perl-Net-CIDR-Set/commit/3a40b4c0d0e8ef996ccb7aee1d5f108187431c2b","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49940","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-49941","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-49941","title":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T16:07:20.739Z","modified":"2026-06-04T18:45:40.658Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-1287","CWE-674"],"updated_at":"2026-11-02T13:35:10.963527Z"}],"euvd":[{"id":"EUVD-2026-34298","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T16:07:20Z","modified":"2026-06-04T18:45:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T18:20:52.744481Z"}],"ghsa":[{"id":"GHSA-wvxw-q92g-9ghf","title":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method...","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T18:30:32Z","modified":"2026-06-04T21:32:27Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T15:08:33.048787Z"}],"nvd":[{"id":"CVE-2026-49941","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T17:16:33.173Z","modified":"2026-07-22T20:10:00.127Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-674","CWE-1287"],"updated_at":"2026-11-02T14:12:22.022466Z"}],"osv":[{"id":"CVE-2026-49941","title":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.\n\nThe add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.\n\nIf the argument was not a well-formed IP address, then this would lead to indefinite recursion.\n\nAn attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T16:07:20.739Z","modified":"2026-10-28T02:30:32.202847409Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-1287","CWE-674"],"updated_at":"2026-11-02T15:45:07.060148Z"},{"id":"DEBIAN-CVE-2026-49941","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses.  The add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask.  If the argument was not a well-formed IP address, then this would lead to indefinite recursion.  An attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T17:16:33.173Z","modified":"2026-10-01T03:03:16.407657872Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:56.444225Z"},{"id":"UBUNTU-CVE-2026-49941","description":"Net::CIDR::Set versions through 0.20 for Perl did not validate IP addresses. The add method called the _encode method to parse addresses. If the addresses did not look like netmasks or network ranges, then they were assumed to single IP addresses and passed back to itself as a 32-bit or 128-bit netmask. If the argument was not a well-formed IP address, then this would lead to indefinite recursion. An attacker could use this to cause a denial of service.","status":"published","published":"2026-06-04T17:16:00Z","modified":"2026-10-17T12:58:32.753203202Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:33.391918Z"},{"id":"openSUSE-SU-2026:10951-1","title":"perl-Net-CIDR-Set-0.210.0-1.1 on GA media","description":"These are all security issues fixed in the perl-Net-CIDR-Set-0.210.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-06-03T00:00:00Z","modified":"2026-06-04T09:00:10.208054078Z","updated_at":"2026-11-02T16:58:38.95195Z"}]}}