---
id: "CVE-2026-46471"
kind: "vulnerability"
aliases: ["CVE-2026-46471"]
title: "GStreamer gst-plugins-good: MP4 parsing can leak heap memory contents"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["gstreamer", "linux", "media-processing", "package"]
not_affected_if: ["no-untrusted-mp4-input"]
published_at: "2026-10-16T16:18:11+00:00"
first_seen_at: "2026-10-23T21:57:13+00:00"
updated_at: "2026-10-25T04:14:10+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46471", "first_seen_at": "2026-10-23T21:57:13+00:00"}]
---

# GStreamer gst-plugins-good: MP4 parsing can leak heap memory contents

While parsing an MP4 file, the isomp4 plugin's qtdemux_parse_uuid function may read past the end of a heap buffer in GStreamer gst-plugins-good before 1.28.2. An attacker who supplies a crafted MP4 file can disclose heap memory contents.

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

## How to check

- Check the installed gst-plugins-good version with `gst-inspect-1.0 --version` or your package manager (for example `dpkg -l | grep gst-plugins-good`).
- Find applications that decode MP4 files with GStreamer, such as media servers or thumbnailers, using `unknown` as the sources do not list them.

## Fix

- Upgrade gst-plugins-good to `1.28.2` or later.
- Rebuild or update applications that bundle GStreamer so they pick up the fixed plugin.

## Timeline

- 2026-10-23T21:57:13+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-46471

## From the sources

An issue was discovered in GStreamer gst-plugins-good before 1.28.2. While parsing an MP4 file, the isomp4 plugin's qtdemux_parse_uuid function may read past the end of a heap-allocated buffer, allowing an attacker to disclose heap memory contents.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_