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.

References

https://gstreamer.freedesktop.org/security/sa-2026-0023.html

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120150

https://bugzilla.redhat.com/show_bug.cgi?id=2569124

https://access.redhat.com/security/cve/CVE-2026-125040

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3