{"id":"CVE-2026-125040","aliases":["DEBIAN-CVE-2026-125040","EUVD-2026-120150","GHSA-432v-qrx4-8j6c","UBUNTU-CVE-2026-125040"],"status":"published","title":"Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle parser causes denial of service","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00379,"percentile":0.32347,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1333"],"published":"2026-11-09T18:16:50Z","modified":"2026-11-11T09:47:36Z","fixes":[{"ecosystem":"Debian:14","package":"gst-plugins-base1.0","fixed_in":["1.28.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.0-3","1.22.0-3+deb12u1","1.22.0-3+deb12u2","1.22.0-3+deb12u3","1.22.0-3+deb12u4","1.22.0-3+deb12u5","1.22.0-3+deb12u6","1.22.0-3+deb12u7","1.22.1-1","1.22.10-1","1.22.2-1","1.22.3-1","1.22.3-2","1.22.4-1","1.22.5-1","1.22.6-1","1.22.7-1","1.22.8-1","1.22.9-1","1.23.1-1","1.23.1-2","1.23.2-1","1.23.2-2","1.23.90-1","1.24.0-1","1.24.0-2","1.24.1-1","1.24.10-1","1.24.11-1","1.24.11-2","1.24.11-3","1.24.12-1","1.24.2-1","1.24.3-1","1.24.4-1","1.24.4-1+hurd.1","1.24.5-1","1.24.6-1","1.24.7-1","1.24.7-2","1.24.7-3","1.24.7-4","1.24.8-1","1.24.9-1","1.25.1-1","1.25.1-2","1.25.1-3","1.25.1-4","1.25.1-5","1.25.50-1","1.25.90-1","1.25.90-2","1.26.0-1","1.26.1-1","1.26.10-1","1.26.2-1","1.26.3-1","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.6-2","1.26.6-3","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.2-2","1.27.2-3","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1","1.28.2-2","1.28.3-1","1.28.4-1","1.28.5-1","1.28.6-1","1.28.6-2","1.28.7-1","1.28.8-1","1.28.9-1","1.29.1-1","1.29.1-2","1.29.1-3","1.29.2-1"]},{"source":"osv","ecosystem":"Debian:13","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.26.10-1","1.26.2-1","1.26.2-1+deb13u1","1.26.2-1+deb13u2","1.26.3-1","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.6-2","1.26.6-3","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.2-2","1.27.2-3","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1","1.28.2-1","1.28.2-2","1.28.3-1","1.28.4-1","1.28.5-1","1.28.6-1","1.28.6-2","1.28.7-1","1.28.8-1","1.28.9-1","1.29.1-1","1.29.1-2","1.29.1-3","1.29.2-1"]},{"source":"osv","ecosystem":"Debian:14","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.2-1"}]}],"versions":["1.26.10-1","1.26.2-1","1.26.3-1","1.26.4-1","1.26.5-1","1.26.5-2","1.26.6-1","1.26.6-2","1.26.6-3","1.26.7-1","1.26.8-1","1.26.9-1","1.27.1-1","1.27.2-1","1.27.2-2","1.27.2-3","1.27.50-1","1.27.50-2","1.27.90-1","1.28.0-1","1.28.1-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.6.0-1ubuntu1","1.6.1-1ubuntu1","1.6.2-1ubuntu1","1.7.1-1ubuntu1","1.7.2-1ubuntu1","1.7.90-1ubuntu1","1.7.91-1ubuntu1","1.8.0-1ubuntu1","1.8.1-1ubuntu0.1","1.8.2-1ubuntu0.1","1.8.2-1ubuntu0.2","1.8.3-1ubuntu0.1","1.8.3-1ubuntu0.2","1.8.3-1ubuntu0.3","1.8.3-1ubuntu0.3+esm1","1.8.3-1ubuntu0.3+esm2","1.8.3-1ubuntu0.3+esm3","1.8.3-1ubuntu0.3+esm4","1.8.3-1ubuntu0.3+esm5","1.8.3-1ubuntu0.3+esm6"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.12.3-1","1.12.4-1","1.13.1-1ubuntu1","1.13.91-1ubuntu1","1.14.0-1ubuntu1","1.14.0-2ubuntu1","1.14.1-1ubuntu1~ubuntu18.04.1","1.14.1-1ubuntu1~ubuntu18.04.2","1.14.4-1ubuntu1.1~ubuntu18.04.1","1.14.5-0ubuntu1~18.04.1","1.14.5-0ubuntu1~18.04.2","1.14.5-0ubuntu1~18.04.3","1.14.5-0ubuntu1~18.04.3+esm1","1.14.5-0ubuntu1~18.04.3+esm2","1.14.5-0ubuntu1~18.04.3+esm3","1.14.5-0ubuntu1~18.04.3+esm4","1.14.5-0ubuntu1~18.04.3+esm5"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.16.1-1","1.16.2-1","1.16.2-2","1.16.2-2ubuntu3","1.16.2-2ubuntu4","1.16.2-4","1.16.2-4ubuntu0.1","1.16.3-0ubuntu1","1.16.3-0ubuntu1.1","1.16.3-0ubuntu1.2","1.16.3-0ubuntu1.3","1.16.3-0ubuntu1.4","1.16.3-0ubuntu1.4+esm1","1.16.3-0ubuntu1.4+esm2","1.16.3-0ubuntu1.4+esm3","1.16.3-0ubuntu1.4+esm4"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.18.5-1","1.19.90-1","1.20.0-1","1.20.0-2","1.20.1-1","1.20.1-1ubuntu0.1","1.20.1-1ubuntu0.2","1.20.1-1ubuntu0.4","1.20.1-1ubuntu0.5","1.20.1-1ubuntu0.6","1.20.1-1ubuntu0.7","1.20.1-1ubuntu0.8"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"gst-plugins-base1.0","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.22.6-1","1.22.7-1","1.22.8-1","1.22.10-1","1.24.1-1","1.24.1-1build1","1.24.2-1","1.24.2-1ubuntu0.1","1.24.2-1ubuntu0.2","1.24.2-1ubuntu0.3","1.24.2-1ubuntu0.4","1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hat","product":"red hat enterprise linux 10"},{"vendor":"red hat","product":"red hat enterprise linux 7"},{"vendor":"red hat","product":"red hat enterprise linux 8"},{"vendor":"red hat","product":"red hat enterprise linux 9"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-125040","tags":["vdb-entry","x_refsource_REDHAT","advisory"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2569124","tags":["issue-tracking","x_refsource_REDHAT","report"]},{"url":"https://gstreamer.freedesktop.org/security/sa-2026-0023.html","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125040","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-432v-qrx4-8j6c"},{"url":"https://access.redhat.com/downloads/content/package-browser/","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125040.json","tags":["advisory"]},{"url":"https://gitlab.freedesktop.org/gstreamer/gstreamer","tags":["package"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-125040","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-125040","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-125040","tags":["report"]},{"url":"access.redhat.com/downloads/content/package-browser","tags":["report"]},{"url":"gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/3a81eb4d7d2c0a34191a855d0bafbf4e8dd7231c","tags":["report"]},{"url":"gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/a41cbb42cedb1cf4a4c2ad6658ff80c7f4cf2404","tags":["report"]},{"url":"gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/d33fc5577ae38caa91b24f90a695d5ced19b76af","tags":["report"]},{"url":"gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11237","tags":["report"]},{"url":"gstreamer.freedesktop.org/security/sa-2026-0023.html","tags":["report"]},{"url":"security-tracker.debian.org/tracker/cve-2026-125040","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-125040","title":"Gst-plugins-base: 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A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-09T18:16:50Z","modified":"2026-11-10T22:12:13Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-10T23:24:16.163953Z"}],"ghsa":[{"id":"GHSA-432v-qrx4-8j6c","title":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While...","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-09T21:31:47Z","modified":"2026-11-09T21:31:55Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-09T21:50:03.505275Z"}],"nvd":[{"id":"CVE-2026-125040","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-09T19:16:48.193Z","modified":"2026-11-10T23:17:20.19Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-1333"],"updated_at":"2026-11-10T14:19:29.397466Z"}],"osv":[{"id":"CVE-2026-125040","title":"Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle parser causes denial of service","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-09T18:16:50.987Z","modified":"2026-11-11T02:48:45.703248954Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-1333"],"updated_at":"2026-11-11T03:22:00.901153Z"},{"id":"DEBIAN-CVE-2026-125040","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-09T19:16:48.193Z","modified":"2026-11-11T09:47:36.672430888Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-10T05:22:46.487299Z"},{"id":"UBUNTU-CVE-2026-125040","description":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. While sanitizing inline subtitle markup, the parser repeatedly searches the remaining text with unanchored regular expressions. A crafted subtitle cue with a long line of unmatched markup-like text can force quadratic CPU use and make a GStreamer-based application unresponsive.","status":"published","published":"2026-11-10T00:00:00Z","modified":"2026-11-11T09:39:20.950715256Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-11T10:01:18.620522Z"}]}}