Packages
- mediawiki - The collaborative editing software that runs Wikipedia.
Details
It was discovered that MediaWiki incorrectly handled group membership
visibility in the OATHAuth extension. An authenticated attacker could
use this issue to determine if other users had two-factor authentication
enabled. (CVE-2026-34087)
It was discovered that MediaWiki incorrectly handled suppressed log entry
titles in the RecentChanges list. An unauthenticated attacker could use
this issue to view titles of deleted or suppressed pages that should be hidden.
(CVE-2026-34088)
It was discovered that MediaWiki incorrectly handled resource loading timing
information. An attacker could use this issue to determine if certain pages
existed on a wiki. (CVE-2026-34092)
It was discovered that MediaWiki incorrectly handled group membership
visibility in the OATHAuth extension. An authenticated attacker could
use this issue to determine if other users had two-factor authentication
enabled. (CVE-2026-34087)
It was discovered that MediaWiki incorrectly handled suppressed log entry
titles in the RecentChanges list. An unauthenticated attacker could use
this issue to view titles of deleted or suppressed pages that should be hidden.
(CVE-2026-34088)
It was discovered that MediaWiki incorrectly handled resource loading timing
information. An attacker could use this issue to determine if certain pages
existed on a wiki. (CVE-2026-34092)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 24.04 LTS noble | mediawiki – 1:1.39.7-1ubuntu0.1~esm1 | ||
| 22.04 LTS jammy | mediawiki – 1:1.35.6-1ubuntu0.1~esm1 | ||
| 20.04 LTS focal | mediawiki – 1:1.31.7-1ubuntu0.1~esm1 | ||
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