Vulnerability Details CVE-2026-12891
A flaw was found in the GStreamer gst-plugins-bad package. When processing a malformed H.266/VVC video stream with a crafted aspect ratio indicator value, the H.266 parser performs an out-of-bounds read of up to 8 bytes from adjacent memory. This flaw allows an attacker to craft a malicious H.266 video file or stream that, when processed by a GStreamer-based application, could leak limited memory contents through video metadata, potentially exposing sensitive information from the application's address space.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 17.9%
CVSS Severity
CVSS v3 Score 4.3