---
id: CVE-2026-119842
title: >-
  Gst-plugins-base: gst-plugins-base: null-pointer dereference in mdvdsub
  subtitle parser via missing closing-brace check
summary: >-
  A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser.
  When processing a specially crafted subtitle file, the parser may dereference
  a NULL pointer, causing the application to crash when a user opens or plays
  media wi…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-476
vendor: Red Hat
product: gstreamer1-plugins-base
affected:
  - gstreamer1-plugins-base (all versions)
  - gstreamer-plugins-base (all versions)
  - gstreamer1-plugins-base (all versions)
  - gstreamer-plugins-base (all versions)
  - gstreamer1-plugins-base (all versions)
  - gstreamer1-plugins-base (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-30T21:18:13.069146Z'
published: '2026-10-30'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T17:05:29.466Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119842'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-119842'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2564183'
    label: RHBZ#2564183
  - url: >-
      https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/11238.patch
  - url: 'https://gstreamer.freedesktop.org/security/sa-2026-0019.html'
tags:
  - cve.org
epss: 0.00332
epssPercentile: 0.26502
ingestedAt: '2026-11-05T22:38:31.420Z'
---

## Overview

A flaw was found in GStreamer's gst-plugins-base MicroDVD subtitle parser. When processing a specially crafted subtitle file, the parser may dereference a NULL pointer, causing the application to crash when a user opens or plays media with a malformed MicroDVD (.sub) subtitle file.

## Affected

- `gstreamer1-plugins-base (all versions)`
- `gstreamer-plugins-base (all versions)`
- `gstreamer1-plugins-base (all versions)`
- `gstreamer-plugins-base (all versions)`
- `gstreamer1-plugins-base (all versions)`
- `gstreamer1-plugins-base (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

Avoid untrusted MicroDVD (.sub) subtitle files; disable automatic subtitle loading if supported.