{"id":"CVE-2026-120651","aliases":["AZL-112789","DEBIAN-CVE-2026-120651","EUVD-2026-116617","GHSA-hwfw-56x5-6gp9","UBUNTU-CVE-2026-120651","openSUSE-SU-2026:12465-1"],"status":"published","title":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","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":"2026-11-12","score":0.00401,"percentile":0.34888,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2026-11-03T23:41:17Z","modified":"2026-11-09T18:43:31Z","affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"perl-CGI","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"4.60-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.55-1","4.57-1","4.59-1","4.60-1","4.61-1","4.62-1","4.63-1","4.64-1","4.65-1","4.66-1","4.67-1","4.68-1","4.70-1","4.71-1","4.72-1","5.02-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.68-1","4.70-1","4.71-1","4.72-1","5.02-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.68-1","4.70-1","4.71-1","4.72-1","5.02-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.21-1","4.22-1","4.25-1","4.26-1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.36-1","4.37-1","4.38-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.44-1","4.45-1","4.46-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.51-1","4.53-1","4.54-1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.57-1","4.60-1","4.61-1","4.62-1","4.63-1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.71-1build1","4.72-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"libcgi-pm-perl","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.68-1","4.71-1","4.71-1build1"]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"perl-CGI","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"5.20.0-1.1"}]}],"bundled":20}],"references":[{"url":"https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm","tags":["technical-description","article","report"]},{"url":"https://metacpan.org/release/LEEJO/CGI-5.00/changes","tags":["release-notes","advisory","report"]},{"url":"https://github.com/leejo/CGI.pm/commit/16d9f61acf8b844b7360e8d726338e3ce34dfa9f.patch","tags":["patch","fix","report"]},{"url":"https://github.com/leejo/CGI.pm/commit/8a78305065690461ae283fa24e5ebe4ec8a22fbc.patch","tags":["patch","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120651","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-hwfw-56x5-6gp9"},{"url":"https://cpan.org/modules","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/120xxx/CVE-2026-120651.json","tags":["advisory"]},{"url":"https://github.com/leejo/CGI.pm","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-120651","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-120651","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-120651","tags":["report"]},{"url":"https://lists.security.metacpan.org/cve-announce/msg/44875017/","tags":["report"]},{"url":"https://github.com/leejo/CGI.pm/commit/16d9f61acf8b844b7360e8d726338e3ce34dfa9f","tags":["report"]},{"url":"https://github.com/leejo/CGI.pm/commit/8a78305065690461ae283fa24e5ebe4ec8a22fbc","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120631","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120632","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120633","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120634","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120635","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120636","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120637","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120638","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120639","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120640","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120641","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120642","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120643","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120644","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120645","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120646","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120647","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120648","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120650","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-120651","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2026-120651","title":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-03T23:41:17.179Z","modified":"2026-11-09T18:43:31.972Z","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-835"],"updated_at":"2026-11-09T19:34:28.960398Z"}],"euvd":[{"id":"EUVD-2026-116617","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-03T23:41:17Z","modified":"2026-11-09T18:43:31Z","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":"2026-11-09T20:18:00.239313Z"}],"ghsa":[{"id":"GHSA-hwfw-56x5-6gp9","title":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when ...","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-04T00:32:22Z","modified":"2026-11-09T21:32:47Z","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-835"],"updated_at":"2026-11-09T21:50:05.607095Z"}],"nvd":[{"id":"CVE-2026-120651","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-04T00:17:26.633Z","modified":"2026-11-09T19:16:44.803Z","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-835"],"updated_at":"2026-11-09T22:15:54.230687Z"}],"osv":[{"id":"CVE-2026-120651","title":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-03T23:41:17.179Z","modified":"2026-11-11T02:30:26.943949489Z","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-835"],"updated_at":"2026-11-10T10:57:25.458985Z"},{"id":"DEBIAN-CVE-2026-120651","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.  When $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.  A client can keep a server process spinning with one such request.","status":"published","published":"2026-11-04T00:17:26.633Z","modified":"2026-11-10T10:00:18.786055108Z","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":"2026-11-10T10:26:30.347596Z"},{"id":"UBUNTU-CVE-2026-120651","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set. When $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends. A client can keep a server process spinning with one such request.","status":"published","published":"2026-11-04T00:17:00Z","modified":"2026-11-12T17:25:21.794103368Z","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":"2026-11-12T18:05:20.870791Z"},{"id":"AZL-112789","title":"CVE-2026-120651 affecting package perl-CGI 4.60-1","description":"CGI versions before 5.00 for Perl allow an infinite loop on a short request body when $DISABLE_UPLOADS is set.\n\nWhen $CGI::PUTDATA_UPLOAD or an upload hook is set, read_postdata_putdata takes a request body that is not a form submission. With $CGI::DISABLE_UPLOADS set, it discards the body by reading until Content-Length bytes have arrived. Once a body shorter than its Content-Length runs out, every read returns 0, so the loop never ends.\n\nA client can keep a server process spinning with one such request.","status":"published","published":"2026-11-04T00:17:26Z","modified":"2026-11-07T14:18:06.233440401Z","updated_at":"2026-11-07T14:48:11.583685Z"},{"id":"openSUSE-SU-2026:12465-1","title":"perl-CGI-5.20.0-1.1 on GA media","description":"These are all security issues fixed in the perl-CGI-5.20.0-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-11-06T00:00:00Z","modified":"2026-11-07T17:23:15.83251468Z","updated_at":"2026-11-07T17:50:39.727056Z"}]}}