CVE-2012-4378

Name: CVE-2012-4378
Creator: NVD / NIST
Published: 2017-10-26T20:29:00.327+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.55%

Last modified Jun 16, 2026

CVE-2012-4378 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.55% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.55%

71.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.18.4
Mediawiki	Mediawiki	1.19.0
Mediawiki	Mediawiki	1.19.1

References

http://www.openwall.com/lists/oss-security/2012/08/31/10Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/08/31/6Mailing List, Patch, Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=853417Issue Tracking, Patch, Third Party Advisory
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.htmlPatch, Vendor Advisory
https://phabricator.wikimedia.org/T39587Issue Tracking, Patch, Vendor Advisory
http://www.openwall.com/lists/oss-security/2012/08/31/10Mailing List, Patch, Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/08/31/6Mailing List, Patch, Third Party Advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=853417Issue Tracking, Patch, Third Party Advisory
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.htmlPatch, Vendor Advisory
https://phabricator.wikimedia.org/T39587Issue Tracking, Patch, Vendor Advisory

Timeline

Published: Oct 26, 2017
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2012-4378?

How severe is CVE-2012-4378?

Severity scoring for CVE-2012-4378 is pending analysis. The EPSS model estimates a 1.55% probability of exploitation in the next 30 days.

How do I fix CVE-2012-4378?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2012-4378?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST