Description
MediaWiki before 1.35.1 blocks legitimate attempts to hide log entries in some situations. If one sets MediaWiki:Mainpage to Special:MyLanguage/Main Page, visits a log entry on Special:Log, and toggles the "Change visibility of selected log entries" checkbox (or a tags checkbox) next to it, there is a redirection to the main page's action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
Remediation
References
Related Vulnerabilities
PostgreSQL Other Vulnerability (CVE-2005-1410)
ownCloud Improper Authentication Vulnerability (CVE-2012-4392)
WordPress 4.9.x Multiple Vulnerabilities (4.9 - 4.9.4)
PHP Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2010-1864)
Internet Information Services Other Vulnerability (CVE-1999-1478)