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High severity7.5NVD Advisory· Published May 11, 2026· Updated Jun 17, 2026

CVE-2026-34090

CVE-2026-34090

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation CheckUser.

This issue affects CheckUser: from 1.45.0 before 1.45.2.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2

MediaWiki/Checkuser
cpe:2.3:a:mediawiki:checkuser:*:*:*:*:*:mediawiki:*:*
Range: >=1.45.0,<1.45.2
Wikimedia Foundation/CheckUserllm-fuzzy
Range: from 1.45.0 before 1.45.2

Patches

Vulnerability mechanics

References

1

phabricator.wikimedia.org/T411366nvdIssue TrackingPatch

News mentions

0

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