CVE-2016-6331

Name: CVE-2016-6331
Creator: NVD / NIST
Published: 2017-04-20T17:59:00.557+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.13%

Last modified Jun 17, 2026

CVE-2016-6331 is a vulnerability of currently unknown severity. ApiParse 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 bypass intended per-title read restrictions via a parse action to api.php.. EPSS estimates a 2.13% chance of exploitation in the next 30 days.

Description

ApiParse 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 bypass intended per-title read restrictions via a parse action to api.php.

Metrics

EPSS Probability

2.13%

79.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

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

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/T115333Patch, Third Party Advisory
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/T115333Patch, Third Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2016-6331?

ApiParse 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 bypass intended per-title read restrictions via a parse action to api.php.

How severe is CVE-2016-6331?

Severity scoring for CVE-2016-6331 is pending analysis. The EPSS model estimates a 2.13% probability of exploitation in the next 30 days.

How do I fix CVE-2016-6331?

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-2016-6331?

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

Scan your code now

Source: NVD / NIST