CVE-2021-45473

MEDIUM

MediaWiki <= 1.37 - Stored Cross-Site Scripting via Wikibase Item Descriptions

Title source: llm

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).

References (3)

Core 3

Core References

Exploit, Third Party Advisory x_refsource_misc

https://phabricator.wikimedia.org/T294693

Third Party Advisory x_refsource_misc

https://gerrit.wikimedia.org/r/q/I3cd080a1a7dacd7396d37ee0c98cff0b4e241f8d

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7JNQA53K675TQBBJPZRAG5ZT6XES3IS/

Scores

CVSS v3 6.1

EPSS 0.0033

EPSS Percentile 55.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE

CWE-79

Status published

Products (2)

fedoraproject/fedora 35

mediawiki/mediawiki < 1.3.7

Published Dec 24, 2021

Tracked Since Feb 18, 2026