---
id: "CVE-2026-119842"
kind: "vulnerability"
aliases: ["CVE-2026-119842"]
title: "GStreamer: malformed MicroDVD subtitle file crashes media playback"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["gstreamer", "linux", "media-playback", "runtime"]
not_affected_if: ["no-user-subtitles", "trusted-media-only"]
published_at: "2026-10-30T19:18:22+00:00"
first_seen_at: "2026-10-30T19:25:29+00:00"
updated_at: "2026-10-30T19:26:18+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119842", "first_seen_at": "2026-10-30T19:25:29+00:00"}]
---

# GStreamer: malformed MicroDVD subtitle file crashes media playback

GStreamer's gst-plugins-base MicroDVD subtitle parser can dereference a NULL pointer when it reads a crafted .sub file. The result is a crash of the application that opens or plays the media.

_Summary, check and fix written by a model from the sources; labelled as such._

## Timeline

- 2026-10-30T19:25:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119842

## From the sources

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.

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