CVE-2026-46471 Information disclosure in n/a
An attacker can disclose heap memory contents by crafting a malicious MP4 file parsed by the GStreamer isomp4 plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-46471?
CVE-2026-46471 is a medium-severity vulnerability in n/a, published on 16 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An issue was discovered in GStreamer gst-plugins-good before 1.28.2. While parsing an MP4 file, the isomp4 plugin's qtdemux_parse_uuid function may read past the end of a heap-allocated buffer, allowing an attacker to disclose heap memory contents.
Weakness: CWE-126
Which versions are affected by CVE-2026-46471?
How do I fix CVE-2026-46471?
Upgrade to a fixed version.
Is CVE-2026-46471 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-46471 exists.
Sources
Also known as DEBIAN-CVE-2026-46471, ECHO-dec4-644f-c531, GHSA-5vvw-9383-fwx7, UBUNTU-CVE-2026-46471.