In GStreamer through 1.26.1, the isomp4 plugin's qtdemux_parse_trak function may read past the end of a heap buffer while parsing an MP4 file, possibly leading to information disclosure.
https://gstreamer.freedesktop.org/security/
https://github.com/atredispartners/advisories/blob/master/2025/ATREDIS-2025-0003.md