CVE-2026-18296

Name	CVE-2026-18296
Description	GStreamer MRF File Parsing Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of MRF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-29608.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
gst-plugins-good1.0 (PTS)	bullseye	1.18.4-2+deb11u2	vulnerable
	bullseye (security)	1.18.4-2+deb11u4	vulnerable
	bookworm	1.22.0-5+deb12u3	vulnerable
	bookworm (security)	1.22.0-5+deb12u2	vulnerable
	trixie (security), trixie	1.26.2-1+deb13u2	vulnerable
	forky, sid	1.28.6-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
gst-plugins-good1.0	source	(unstable)	1.28.5-1

Notes

https://gstreamer.freedesktop.org/security/sa-2026-0050.html
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5118 (private)
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5120 (private)
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/12041
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/commit/93fa4cd30ba43b38b02a9de76a7a80dc198c87a0
qtmoovrecover not included in binary packages