Mediawiki · Mediawiki · CVE-2021-46148
**Name of the Vulnerable Software and Affected Versions**
MediaWiki versions prior to 1.35.5
MediaWiki versions 1.36.x prior to 1.36.3
MediaWiki versions 1.37.x prior to 1.37.1
**Description**
An issue allows some unprivileged users to view confidential information, such as IP addresses and User-Agent headers for election traffic, on a testwiki SecurePoll instance.
**Recommendations**
For MediaWiki versions prior to 1.35.5, update to version 1.35.5 or later.
For MediaWiki versions 1.36.x prior to 1.36.3, update to version 1.36.3 or later.
For MediaWiki versions 1.37.x prior to 1.37.1, update to version 1.37.1 or later.