CVE-2020-10960

NameCVE-2020-10960
DescriptionIn MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-4651-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
mediawiki (PTS)bullseye1:1.35.13-1+deb11u2fixed
bullseye (security)1:1.35.13-1+deb11u3fixed
bookworm, bookworm (security)1:1.39.10-1~deb12u1fixed
trixie, sid1:1.39.10-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
mediawikisourcestretch(not affected)
mediawikisourcebuster1:1.31.7-1~deb10u1DSA-4651-1
mediawikisource(unstable)1:1.31.7-1

Notes

[stretch] - mediawiki <not-affected> (Vulnerable code introduced later)
https://phabricator.wikimedia.org/T246602
https://lists.wikimedia.org/pipermail/wikitech-l/2020-March/093243.html
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