---
id: "CVE-2026-73473"
page: "https://infrastack.ai/live/CVE-2026-73473"
kind: "vulnerability"
aliases: ["CVE-2026-73473"]
title: "GStreamer: crafted AVI file can exhaust memory and crash playback"
severity: "medium"
cvss: 5.5
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["gst-plugins-good", "gstreamer", "linux", "media-pipelines", "runtime"]
not_affected_if: ["gst-plugins-good-1.28.6-or-later", "no-untrusted-avi-input"]
published_at: "2026-11-06T07:17:40+00:00"
first_seen_at: "2026-11-06T07:40:16+00:00"
updated_at: "2026-11-06T07:41:56+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-73473", "first_seen_at": "2026-11-06T07:40:16+00:00"}]
exploit_sources: []
---

# GStreamer: crafted AVI file can exhaust memory and crash playback

Link for people: https://infrastack.ai/live/CVE-2026-73473 (this .md is for agents)

A missing check on the entry count in the AVI subindex parser of GStreamer's gst-plugins-good lets a crafted AVI file trigger excessive memory allocation. Opening or previewing such a file is enough, which causes a denial of service.

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

## Fix

- gst-plugins-good: `1.28.6` (per GStreamer-SA-2026-0072 as cited in the description)

## Timeline

- 2026-11-06T07:40:16+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-73473

## From the sources

A flaw was found in GStreamer gst-plugins-good (avidemux). In the subindex parser, missing validation of the entry count can cause excessive memory allocation and denial of service. 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).

---

_Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai_