Medium
6.5
Gst-plugins-base: gst-plugins-base: quadratic regex processing in srt/webvtt subtitle parser causes denial of service
CVE-2026-125040
First seen on SecPulse
Affected packages
| Package | Affected → Fixed | |
|---|---|---|
| Red HatRed Hat Enterprise Linux 10 | — | Not listed |
| Red HatRed Hat Enterprise Linux 7 | — | Not listed |
| Red HatRed Hat Enterprise Linux 8 | — | Not listed |
| Red HatRed Hat Enterprise Linux 9 | — | Not listed |
| GStreamergst-plugins-base |
≥ 0.0.0, < 1.28.2→ 1.28.2 |
1.28.2 |
Fix status by distribution
Records published by each distribution for this CVE. Fixed versions differ by release; check each link.
- Debian DEBIAN-CVE-2026-125040 gst-plugins-base1.0 Fix available
- Ubuntu UBUNTU-CVE-2026-125040 gst-plugins-base1.0 No fixed version in this record
Original description The description as published by the source.
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.
Source: CVE.org (CVE Program・cvelistV5) NVD GitHub Advisory
References
- advisory access.redhat.com
- advisory nvd.nist.gov
- advisory github.com
- package gitlab.freedesktop.org
- report bugzilla.redhat.com
- web gstreamer.freedesktop.org
- web github.com
- web access.redhat.com