CVE-2016-6334

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% 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 Parser::replaceInternalLinks2 method 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 vectors involving replacement of percent encoding in unclosed internal links.

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/98057
https://bugzilla.redhat.com/show_bug.cgi?id=1369613
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html
https://phabricator.wikimedia.org/T137264
http://www.securityfocus.com/bid/98057
https://bugzilla.redhat.com/show_bug.cgi?id=1369613
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.html
https://phabricator.wikimedia.org/T137264

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