CVE-2016-6333

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-04-20 · updated 2026-06-17
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in the CSS user subpage preview feature in MediaWiki before 1.23.15, 1.26.x before 1.26.4, and 1.27.x before 1.27.1 allows remote attackers to inject arbitrary web script or HTML via the edit box in Special:MyPage/common.css.

Affected products

Wikimedia Foundation MediaWiki: through 1.23.14; 1.26.0, 1.26.1, 1.26.2, 1.26.3, 1.26.4, 1.27.0

References

http://www.securityfocus.com/bid/98053
https://bugzilla.redhat.com/show_bug.cgi?id=1369613
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html
https://phabricator.wikimedia.org/T133147
http://www.securityfocus.com/bid/98053
https://bugzilla.redhat.com/show_bug.cgi?id=1369613
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html
https://phabricator.wikimedia.org/T133147

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