CVE-2020-25814

Name	CVE-2020-25814
Description	In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2379-1, DSA-4767-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mediawiki (PTS)	stretch (security)	1:1.27.7-1+deb9u11	fixed
	stretch (lts), stretch	1:1.27.7-1+deb9u13	fixed
	buster (security), buster, buster (lts)	1:1.31.16-1+deb10u8	fixed
	bullseye	1:1.35.13-1+deb11u2	fixed
	bullseye (security)	1:1.35.13-1+deb11u3	fixed
	bookworm (security), bookworm	1:1.39.10-1~deb12u1	fixed
	sid, trixie	1:1.39.10-1	fixed

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

Package	Type	Release	Fixed Version	Origin
mediawiki	source	stretch	1:1.27.7-1~deb9u4	DLA-2379-1
mediawiki	source	buster	1:1.31.10-1~deb10u1	DSA-4767-1
mediawiki	source	(unstable)	1:1.35.0-1

https://lists.wikimedia.org/pipermail/wikitech-l/2020-September/093888.html
https://phabricator.wikimedia.org/T86738