CVE-2025-3469

Name	CVE-2025-3469
Description	Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Wikimedia Foundation MediaWiki. This vulnerability is associated with program files includes/htmlform/fields/HTMLMultiSelectField.Php. This issue affects MediaWiki: before 1.39.12, 1.42.6, 1.43.1.
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)
References	DLA-4249-1, DSA-5901-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	bullseye	1:1.35.13-1+deb11u2	vulnerable
	bullseye (security)	1:1.35.13-1+deb11u5	fixed
	bookworm, bookworm (security)	1:1.39.13-1~deb12u1	fixed
	trixie	1:1.43.3+dfsg-1	fixed
	forky, sid	1:1.43.5+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Origin
mediawiki	source	bullseye	1:1.35.13-1+deb11u4	DLA-4249-1
mediawiki	source	bookworm	1:1.39.12-1~deb12u1	DSA-5901-1
mediawiki	source	(unstable)	1:1.43.1+dfsg-1

https://phabricator.wikimedia.org/T358689
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/1135795