CVE-2026-46472: GStreamer gst-plugins-good out-of-bounds read in qtdemux_parse_chnl

CVE-2026-46472 · Severity: info · Published 2026-10-16

GStreamer is a multimedia framework used by media players and streaming applications to handle audio and video files. The isomp4 plugin, which parses MP4 files, contains a buffer over-read vulnerability when processing audio channel metadata that could expose sensitive memory contents when a malicious MP4 file is opened.

Technologies: Gstreamer Gst-Plugins-Good. Vendors: Gstreamer.

Quick answers

Is CVE-2026-46472 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-46472 being exploited in the wild.
How severe is CVE-2026-46472?
Informational severity, published 16 October 2026.
Which products and versions are affected?
Gstreamer Gst-Plugins-Good before 1.28.2.
Is there a fix for CVE-2026-46472?
Yes: fixed in gst-plugins-good 1.28.2. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-46472 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-46472?
Check whether you run Gstreamer Gst-Plugins-Good at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: gst-plugins-good 1.28.2

Technical details

The qtdemux_parse_chnl function in the isomp4 plugin fails to properly validate the audio channel layout index when parsing MP4 chnl boxes, leading to an out-of-bounds read from a global array. This occurs during MP4 file parsing without requiring user authentication or special privileges. An attacker can craft a malicious MP4 file that, when parsed, leaks sensitive information from the application's memory.

Affected products

  • GStreamer gst-plugins-good before 1.28.2

Timeline

  • 2026-10-16: disclosed
  • 2026-04-07: advisory: GStreamer Security Advisory 2026-0018 published

References

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