CVE-2020-10960
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.
Does this matter?
Lower severity and a low EPSS score (1.15%). Track it; it rarely justifies an emergency change on its own.
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).
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 1.15% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- mediawiki/mediawiki
- Source
- cve@mitre.org
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.