{"id":"CVE-2026-125040","state":"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.","publishedAt":"2026-11-09T18:16:50.987Z","updatedAt":"2026-11-09T18:41:32.861Z","severity":{"score":6.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"redhat"},"assigner":"redhat","products":["Red Hat Red Hat Enterprise Linux 10","Red Hat Red Hat Enterprise Linux 7","Red Hat Red Hat Enterprise Linux 8","Red Hat Red Hat Enterprise Linux 9"],"affected":[{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","packageName":"gstreamer1-plugins-base","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","packageName":"gstreamer1-plugins-base","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/o:redhat:rhel_els:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","packageName":"gstreamer1-plugins-base","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","packageName":"gstreamer1-plugins-base","defaultStatus":"affected","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux:9"]}],"references":["https://access.redhat.com/security/cve/CVE-2026-125040","https://bugzilla.redhat.com/show_bug.cgi?id=2569124","https://gstreamer.freedesktop.org/security/sa-2026-0023.html"],"weaknesses":["CWE-1333"],"ingestedAt":"2026-11-09T18:50:06.466Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/125xxx/CVE-2026-125040.json","commit":"25decaddb4a6f325475f2a9b38712cef3315730a","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-125040","state":"PUBLISHED","datePublished":"2026-11-09T18:16:50.987Z","dateUpdated":"2026-11-09T18:41:32.861Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-11-09T16:17:34.662Z"},"containers":{"cna":{"title":"Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle parser causes denial of service","descriptions":[{"lang":"en","value":"A flaw was found in the SRT and WebVTT subtitle parser in GStreamer's gst-plugins-base. 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Where updating is not yet possible, applications that do not require untrusted SRT/WebVTT subtitles can prevent automatic selection of the subparse element (for example, by setting GST_PLUGIN_FEATURE_RANK=subparse:NONE)."}],"timeline":[{"lang":"en","time":"2026-04-07T00:00:00.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-04-07T00:00:00.000Z","value":"Made public."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-11-09T18:41:00.538836Z","id":"CVE-2026-125040","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-11-09T18:41:32.861Z"}}]}}}