CVE-2026-78161

Name	CVE-2026-78161
Description	A vulnerability was found in warmcat libwebsockets 4.5.0. Impacted is the function report_raw_cbor of the file lib/misc/lecp.c of the component LECP CBOR Recording. The manipulation results in out-of-bounds write. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as 1d44554a1bb262db63ff4e240152a9deecd99054. It is best practice to apply a patch to resolve this issue.
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
libwebsockets (PTS)	bullseye	4.0.20-2	vulnerable
	bullseye (security)	4.0.20-2+deb11u1	vulnerable
	bookworm	4.1.6-3	vulnerable
	trixie	4.3.5-1+deb13u1	vulnerable
	forky, sid	4.3.5-5	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libwebsockets	source	(unstable)	(unfixed)

Fixed by: https://github.com/warmcat/libwebsockets/commit/1d44554a1bb262db63ff4e240152a9deecd99054 (v5.0.0)