Medium severity6.1NVD Advisory· Published Dec 24, 2021· Updated Jun 17, 2026

CVE-2021-45472

Description

In MediaWiki through 1.37, XSS can occur in Wikibase because an external identifier property can have a URL format that includes a $1 formatter substitution marker, and the javascript: URL scheme (among others) can be used.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

osv-coords
pkg:bitnami/mediawiki
Range: < 1.37.1
MediaWiki/MediaWikidescription
Wikimedia Foundation/Mediawikillm-fuzzy
Range: <1.37
MediaWiki/Wikibasellm-fuzzy
Range: <1.37
MediaWiki/Mediawiki
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
Range: <=1.37
Fedoraproject/Fedora
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

gerrit.wikimedia.org/r/q/I37ece1dfdc80d38055067c9c4fa73ba591acd8bdnvdThird Party Advisory
phabricator.wikimedia.org/T297570nvdThird Party Advisory
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/nvd

News mentions

No linked articles in our index yet.

cvss	0.397
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000