Name of the Vulnerable Software and Affected Versions:
MediaWiki versions prior to 1.39.12
MediaWiki versions prior to 1.42.6
MediaWiki versions prior to 1.43.1
Description:
The issue is related to an Improper Neutralization of Input During Web Page Generation, also known as Cross-site Scripting (XSS). This affects program files, specifically includes/htmlform/fields/HTMLMultiSelectField.php.
Recommendations:
For versions prior to 1.39.12, update to version 1.39.12 or later.
For versions prior to 1.42.6, update to version 1.42.6 or later.
For versions prior to 1.43.1, update to version 1.43.1 or later.