CVE-2020-10960

Name: CVE-2020-10960
Creator: NVD / NIST
Published: 2020-04-03T15:15:14.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2020-10960 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

In MediaWiki before 1.34.1, users can add various Cascading Style Sheets (CSS) classes (which can affect what content is shown or hidden in the user interface) to arbitrary DOM nodes via HTML content within a MediaWiki page. This occurs because jquery.makeCollapsible allows applying an event handler to any Cascading Style Sheets (CSS) selector. There is no known way to exploit this for cross-site scripting (XSS).

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.12%

62.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Mediawiki	Mediawiki	< 1.34.1

References

https://lists.wikimedia.org/pipermail/wikitech-l/2020-March/093243.htmlMailing List, Patch, Vendor Advisory
https://phabricator.wikimedia.org/T246602Exploit, Vendor Advisory
https://lists.wikimedia.org/pipermail/wikitech-l/2020-March/093243.htmlMailing List, Patch, Vendor Advisory
https://phabricator.wikimedia.org/T246602Exploit, Vendor Advisory

Timeline

Published: Apr 3, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10960?

How severe is CVE-2020-10960?

CVE-2020-10960 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10960?

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-2020-10960?

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

Scan your code now

Source: NVD / NIST