CVE-2023-36675

Name of the Vulnerable Software and Affected Versions MediaWiki versions prior to 1.35.11 MediaWiki versions 1.36.x through 1.38.x before 1.38.7 MediaWiki versions 1.39.x before 1.39.4 MediaWiki versions 1.40.x before 1.40.1

Description The issue is related to a possibility of using XSS in the partial blocks feature of MediaWiki. This could allow a remote attacker to perform cross-site scripting attacks. The vulnerability is located in the BlockLogFormatter.php file within the BlockLogFormatter.

Recommendations For MediaWiki versions prior to 1.35.11, update to version 1.35.11 or later. For MediaWiki versions 1.36.x through 1.38.x before 1.38.7, update to version 1.38.7 or later. For MediaWiki versions 1.39.x before 1.39.4, update to version 1.39.4 or later. For MediaWiki versions 1.40.x before 1.40.1, update to version 1.40.1 or later. As a temporary workaround, consider disabling the partial blocks feature until a patch is available.