---
id: "CVE-2026-119727"
kind: "vulnerability"
aliases: ["CVE-2026-119727"]
title: "GStreamer gst-plugins-bad: crafted H.265 video file crashes media-playing applications"
severity: "medium"
cvss: 6.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["gstreamer", "h265", "linux", "media-playback", "package"]
not_affected_if: ["no-untrusted-h265-input"]
published_at: "2026-10-30T19:18:21+00:00"
first_seen_at: "2026-10-30T19:25:28+00:00"
updated_at: "2026-10-30T19:26:19+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119727", "first_seen_at": "2026-10-30T19:25:28+00:00"}]
---

# GStreamer gst-plugins-bad: crafted H.265 video file crashes media-playing applications

A malformed H.265 video file can make GStreamer's H.265 parser write past the end of a fixed-size array during parsing. The result is memory corruption and an application crash, and the sources limit the impact to denial of service.

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

## Timeline

- 2026-10-30T19:25:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119727

## From the sources

A flaw was found in GStreamer's gst-plugins-bad H.265 video parser. When parsing a specially crafted H.265 bitstream containing a Screen Content Coding (SCC) extension with certain palette predictor initializer settings, an integer underflow in the upper-bound computation allows the parser to accept an out-of-range value for the number of palette predictor entries. This causes the parser to write beyond the end of a fixed-size array, resulting in memory corruption and an application crash. Successful exploitation requires an attacker to provide a malformed H.265 media file to a vulnerable application, and is limited to a denial-of-service impact.

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