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Back to active CVEs
Medium · CVSS 5.5CVE-2026-73473

Gstreamer1-plugins-good: gstreamer: missing subindex entry count validation in avidemux leading to denial of serviceCVE-2026-73473

Answer in brief

CVE-2026-73473 records a Medium severity (CVSS 5.5) vulnerability in Gstreamer1-plugins-good: gstreamer: missing subindex entry count validation in avidemux leading to denial of service. The current sources do not mark it as known exploited. The current feed maps GStreamer/gst-plugins-good (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 6, 2026Updated Nov 6, 2026Source checked Nov 6, 2026First seen by HOL Nov 6, 2026Material review Nov 6, 2026
Upstream Advisory

Key facts

Risk
Medium · CVSS 5.5
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 5.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps GStreamer/gst-plugins-good (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
GStreamer/gst-plugins-goodgeneric>=0 <1.28.61.28.6

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for GStreamer/gst-plugins-good.
  2. 2Review the reported fix. Update GStreamer/gst-plugins-good to 1.28.6 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 6, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 6, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencegitlab.freedesktop.org
  • Source referencegstreamer.freedesktop.org
Upstream source description

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).

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Gstreamer1-plugins-good: gstreamer: out-of-bounds read in avidemux nikon metadata tag parsingSame gstreamer/gst-plugins-good package
  • Gstreamer1-plugins-good: gstreamer: integer overflow in avidemux superindex/subindex parsing leading to out-of-bounds readSame gstreamer/gst-plugins-good package

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-770
Source
CVE List V5
Source checked
Nov 6, 2026
References
4 linked sources
Open source record