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 pages action=historysubmit (instead of the desired behavior in which a revision-deletion form appears).
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Mediawiki | Mediawiki | * | 1.35.1 (excluding) |
| Mediawiki | Ubuntu | bionic | * |
| Mediawiki | Ubuntu | groovy | * |
| Mediawiki | Ubuntu | hirsute | * |
| Mediawiki | Ubuntu | impish | * |
| Mediawiki | Ubuntu | kinetic | * |
| Mediawiki | Ubuntu | lunar | * |
| Mediawiki | Ubuntu | mantic | * |
| Mediawiki | Ubuntu | trusty | * |
| Mediawiki | Ubuntu | upstream | * |