MediaWiki Cross-site Scripting (XSS) vulnerability
Date: 2022-05
Affected: composer/mediawiki/core, composer/mediawiki/core
Attack vector: xss
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2020-25815
CWE: CWE-79
CVSS: 6.1 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

An issue was discovered in MediaWiki 1.32.x through 1.34.x before 1.34.4. LogEventList::getFiltersDesc is insecurely using message text to build options names for an HTML multi-select field. The relevant code should use escaped() instead of text().


Mitigations:

Architectural layers (MAESTRO):