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

CVE-2020-35477

Related Vulnerabilities

Plone CMS Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') Vulnerability (CVE-2021-29002)

WordPress Plugin Buddypress Component Stats Local File Inclusion (1.0)

WordPress Plugin Font-official webfonts plugin of Fonts For Web Cross-Site Scripting (7.5.1)

Drupal Resource Management Errors Vulnerability (CVE-2014-5266)

Magento Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2021-28566)

Severity

Medium

Classification

CVE-2020-35477 CWE-20 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Tags

Missing Update Known Vulnerabilities