CVE-2026-125040
Published:November 09, 2026
Updated:November 10, 2026
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.
Affected Packages
https://github.com/GStreamer/gstreamer.git (GITHUB):
Affected version(s) =1.29.1 <1.29.2Fix Suggestion:
Update to version 1.29.2https://github.com/GStreamer/gstreamer.git (GITHUB):
Affected version(s) >=gst-plugins-base-1.9.1 <1.28.2 || >=1.19.3 <1.28.2 || >=1.21.1 <1.28.2 || >=1.23.1 <1.28.2 || >=1.25.1 <1.28.2 || >=1.27.1 <1.28.2Fix Suggestion:
Update to version 1.28.2Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.1
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Inefficient Regular Expression Complexity