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CVE-2026-34090

Suggested investigations: Handle suppressed usernames

CVSS 4.8 MEDIUMEPSS 0.3%CWE-200
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/R:U

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