| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki | = 1.19.0= 1.19.1≤ 1.18.4 |
MediaWiki before 1.18.5, and 1.19.x before 1.19.2 does not properly protect user block metadata, which allows remote administrators to read a user block reason via a reblock attempt.
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