CVE-2020-35625

Name: CVE-2020-35625
Creator: NVD / NIST
Published: 2020-12-21T23:15:12.53+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.03%

Last modified Jun 17, 2026

CVE-2020-35625 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. An issue was discovered in the Widgets extension for MediaWiki through 1.35.1. Any user with the ability to edit pages within the Widgets namespace could call any static function within any class (defined within PHP or MediaWiki) via a crafted HTML comment, related to a Smarty template. EPSS estimates a 1.03% chance of exploitation in the next 30 days.

Description

An issue was discovered in the Widgets extension for MediaWiki through 1.35.1. Any user with the ability to edit pages within the Widgets namespace could call any static function within any class (defined within PHP or MediaWiki) via a crafted HTML comment, related to a Smarty template. For example, a person in the Widget Editors group could use \MediaWiki\Shell\Shell::command within a comment.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.03%

59.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	<= 1.35.1

References

https://gerrit.wikimedia.org/r/q/Ic899a8b15bc510e61cdacb5c024af2d226a2dbebThird Party Advisory
https://phabricator.wikimedia.org/T269718Third Party Advisory
https://gerrit.wikimedia.org/r/q/Ic899a8b15bc510e61cdacb5c024af2d226a2dbebThird Party Advisory
https://phabricator.wikimedia.org/T269718Third Party Advisory

Timeline

Published: Dec 21, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-35625?

How severe is CVE-2020-35625?

CVE-2020-35625 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.03% probability of exploitation in the next 30 days.

How do I fix CVE-2020-35625?

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-2020-35625?

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

Scan your code now

Source: NVD / NIST