CVE-2016-6334

Name: CVE-2016-6334
Creator: NVD / NIST
Published: 2017-04-20T17:59:00.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.12%

Last modified Jun 17, 2026

CVE-2016-6334 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.12%

62.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.23.14
Mediawiki	Mediawiki	1.26.0
Mediawiki	Mediawiki	1.26.1
Mediawiki	Mediawiki	1.26.2
Mediawiki	Mediawiki	1.26.3
Mediawiki	Mediawiki	1.26.4
Mediawiki	Mediawiki	1.27.0

References

http://www.securityfocus.com/bid/98057
https://bugzilla.redhat.com/show_bug.cgi?id=1369613Issue Tracking
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.htmlMailing List, Patch, Vendor Advisory
https://phabricator.wikimedia.org/T137264Patch, Third Party Advisory
http://www.securityfocus.com/bid/98057
https://bugzilla.redhat.com/show_bug.cgi?id=1369613Issue Tracking
https://lists.wikimedia.org/pipermail/mediawiki-announce/2016-August/000195.htmlMailing List, Patch, Vendor Advisory
https://phabricator.wikimedia.org/T137264Patch, Third Party Advisory

Timeline

Published: Apr 20, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-6334?

How severe is CVE-2016-6334?

Severity scoring for CVE-2016-6334 is pending analysis. The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6334?

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-2016-6334?

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

Scan your code now

Source: NVD / NIST