---
id: "CVE-2026-73471"
page: "https://infrastack.ai/live/CVE-2026-73471"
kind: "vulnerability"
aliases: ["CVE-2026-73471"]
title: "GStreamer: crafted AVI file triggers out-of-bounds read in Nikon metadata parser"
severity: "medium"
cvss: 6.1
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["gst-plugins-good", "gstreamer", "media-players", "runtime"]
not_affected_if: []
published_at: "2026-11-06T07:17:28+00:00"
first_seen_at: "2026-11-06T07:40:16+00:00"
updated_at: "2026-11-06T07:41:57+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73471", "first_seen_at": "2026-11-06T07:40:16+00:00"}]
exploit_sources: []
---

# GStreamer: crafted AVI file triggers out-of-bounds read in Nikon metadata parser

Link for people: https://infrastack.ai/live/CVE-2026-73471 (this .md is for agents)

GStreamer's gst-plugins-good avidemux plugin dereferences a pointer in its Nikon metadata tag parser without checking that the data is still in the buffer. Opening or previewing a crafted AVI file, which playbin, decodebin and gst-discoverer load automatically, lets an attacker read memory out of bounds.

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

## How to check

- Check whether the installed gst-plugins-good version is below `1.28.6`.
- Check whether your application uses GStreamer playbin, decodebin or gst-discoverer to open AVI files from untrusted sources.

## Fix

- gst-plugins-good: move to `1.28.6` or later (GStreamer-SA-2026-0072).

## Timeline

- 2026-11-06T07:40:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-73471

## From the sources

A flaw was found in GStreamer gst-plugins-good (avidemux). In the Nikon metadata tag parser, a pointer can be dereferenced without verifying that data remains in the buffer, causing out-of-bounds reads. Because avidemux is auto-plugged by playbin, decodebin, and gst-discoverer, opening or previewing a crafted AVI is sufficient to trigger the issue. Fixed upstream in gst-plugins-good 1.28.6 (GStreamer-SA-2026-0072).

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