CVE-2026-73473

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

Published Nov 6, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Gstreamer
Gstreamer gst-plugins-good
Vendors & Products Gstreamer
Gstreamer gst-plugins-good
Type Values Removed Values Added
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).
Title Gstreamer1-plugins-good: gstreamer: missing subindex entry count validation in avidemux leading to denial of service
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 10, 2026, 7:42 PM
Reserved
Aug 12, 2026, 4:53 PM
Status
Awaiting Analysis
Published
Nov 6, 2026, 7:17 AM
Modified
Nov 10, 2026, 8:19 PM