| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki | = 1.39.0= 1.39.1 |
An issue was discovered in the CheckUser extension for MediaWiki through 1.39.x. Various components of this extension can expose information on the performer of edits and logged actions. This information should not allow public viewing: it is supposed to be viewable only by users with suppression rights.
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