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CVE-2026-34090

HIGH CVSS: 7.5 Published: 2026-05-11 Modified: 2026-06-17

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.

Affected Platforms

Mediawiki Checkuser

Weakness Type

CWE-200

References