Cross-site Scripting (XSS) Affecting mediawiki package, versions <1:1.35.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.14% (50th percentile)

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  • Snyk IDSNYK-DEBIAN12-MEDIAWIKI-1553993
  • published25 Sept 2020
  • disclosed27 Sept 2020

Introduced: 25 Sep 2020

CVE-2020-25812  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Debian:12 mediawiki to version 1:1.35.0-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An issue was discovered in MediaWiki 1.34.x before 1.34.4. On Special:Contributions, the NS filter uses unescaped messages as keys in the option key for an HTMLForm specifier. This is vulnerable to a mild XSS if one of those messages is changed to include raw HTML.

CVSS Scores

version 3.1