CVE-2017-8812

Name: CVE-2017-8812
Creator: NVD / NIST
Published: 2017-11-15T08:29:00.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.57%

Last modified Jun 17, 2026

CVE-2017-8812 is a vulnerability of currently unknown severity. MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline.. EPSS estimates a 1.57% chance of exploitation in the next 30 days.

Description

MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline.

Metrics

EPSS Probability

1.57%

72.3th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.27.3
Mediawiki	Mediawiki	1.28.0
Mediawiki	Mediawiki	1.28.1
Mediawiki	Mediawiki	1.28.2
Mediawiki	Mediawiki	1.29.0
Mediawiki	Mediawiki	1.29.1
Debian	Debian Linux	9.0

References

http://www.securitytracker.com/id/1039812Third Party Advisory, VDB Entry
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.htmlMailing List, Patch, Vendor Advisory
https://www.debian.org/security/2017/dsa-4036Third Party Advisory
http://www.securitytracker.com/id/1039812Third Party Advisory, VDB Entry
https://lists.wikimedia.org/pipermail/mediawiki-announce/2017-November/000216.htmlMailing List, Patch, Vendor Advisory
https://www.debian.org/security/2017/dsa-4036Third Party Advisory

Timeline

Published: Nov 15, 2017
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2017-8812?

MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2 allows remote attackers to inject > (greater than) characters via the id attribute of a headline.

How severe is CVE-2017-8812?

Severity scoring for CVE-2017-8812 is pending analysis. The EPSS model estimates a 1.57% probability of exploitation in the next 30 days.

How do I fix CVE-2017-8812?

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-2017-8812?

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

Scan your code now

Source: NVD / NIST