CVE-2026-73473

Public on 2026-11-06
Modified on 2026-11-07
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).
Severity
Medium severity
Medium
See what this means
CVSS v3 Base Score
5.5
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2 - Core gstreamer-plugins-good Pending Fix
Amazon Linux 2 - Core gstreamer1-plugins-good Pending Fix
Amazon Linux 2023 gstreamer1-plugins-good Pending Fix
Amazon Linux 2027 Preview gstreamer1-plugins-good Not Affected

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 5.5 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-73473 Mitre: CVE-2026-73473