CVE-2016-6333

Name: CVE-2016-6333
Creator: NVD / NIST
Published: 2017-04-20T17:59:00.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.02%

Last modified Jun 17, 2026

CVE-2016-6333 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.02% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

1.02%

58.8th 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/98053
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/T133147Patch, Third Party Advisory
http://www.securityfocus.com/bid/98053
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/T133147Patch, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2016-6333?

How severe is CVE-2016-6333?

Severity scoring for CVE-2016-6333 is pending analysis. The EPSS model estimates a 1.02% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6333?

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-2016-6333?

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

Scan your code now

Source: NVD / NIST