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

CVE-2021-45473

Description

In MediaWiki through 1.37, Wikibase item descriptions allow XSS, which is triggered upon a visit to an action=info URL (aka a page-information sidebar).

AI Insight

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

Affected products

osv-coords
pkg:bitnami/mediawiki
Range: < 1.3.8
MediaWiki/MediaWikidescription
MediaWiki/Mediawikillm-fuzzy2 versions
<1.37+ 1 more
- (no CPE)range: <1.37
- cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*range: <=1.3.7
Fedoraproject/Fedora
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Patches

Vulnerability mechanics

References

phabricator.wikimedia.org/T294693nvdExploitThird Party Advisory
gerrit.wikimedia.org/r/q/I3cd080a1a7dacd7396d37ee0c98cff0b4e241f8dnvdThird 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