CVE-2022-34911

Name	CVE-2022-34911
Description	An issue was discovered in MediaWiki before 1.35.7, 1.36.x and 1.37.x before 1.37.3, and 1.38.x before 1.38.1. XSS can occur in configurations that allow a JavaScript payload in a username. After account creation, when it sets the page title to "Welcome" followed by the username, the username is not escaped: SpecialCreateAccount::successfulAction() calls ::showSuccessPage() with a message as second parameter, and OutputPage::setPageTitle() uses text().
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
References	DLA-3117-1, DSA-5246-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	buster	1:1.31.16-1+deb10u2	vulnerable
	buster (security)	1:1.31.16-1+deb10u4	fixed
	bullseye (security), bullseye	1:1.35.8-1~deb11u1	fixed
	bookworm, sid	1:1.39.2-1	fixed

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

Package	Type	Release	Fixed Version	Origin
mediawiki	source	buster	1:1.31.16-1+deb10u3	DLA-3117-1
mediawiki	source	bullseye	1:1.35.8-1~deb11u1	DSA-5246-1
mediawiki	source	(unstable)	1:1.35.7-1

Notes

https://phabricator.wikimedia.org/T308471
https://gerrit.wikimedia.org/r/c/mediawiki/core/+/805208
https://lists.wikimedia.org/hyperkitty/list/wikitech-l@lists.wikimedia.org/thread/PIPYDRSHXOYW5DB7X755QDNUV5EZWPWB/