CVE-2012-4378

Severity: medium (CVSS 6.1 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-10-26 · updated 2026-06-16
Weakness: CWE-79

Description

Multiple cross-site scripting (XSS) vulnerabilities in MediaWiki before 1.18.5 and 1.19.x before 1.19.2, when unspecified JavaScript gadgets are used, allow remote attackers to inject arbitrary web script or HTML via the userlang parameter to w/index.php.

Affected products

Wikimedia Foundation MediaWiki: through 1.18.4; 1.19.0, 1.19.1

References

http://www.openwall.com/lists/oss-security/2012/08/31/10
http://www.openwall.com/lists/oss-security/2012/08/31/6
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330
https://bugzilla.redhat.com/show_bug.cgi?id=853417
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html
https://phabricator.wikimedia.org/T39587
http://www.openwall.com/lists/oss-security/2012/08/31/10
http://www.openwall.com/lists/oss-security/2012/08/31/6
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330
https://bugzilla.redhat.com/show_bug.cgi?id=853417
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html
https://phabricator.wikimedia.org/T39587

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