CH
Product
CheckUser
by Wikimedia Foundation · last CVE Jul 1, 2026
9
CVEs
0
On KEV
8.8
Max CVSS
0
New 30D
Severity mix
Critical 0High 2Medium 4Low 3
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CVECVSSEPSSPublishedSummary · affected versions
CVE-2025-67478
8.8
0%
Feb 3
Wrong E-Mail address composition for usernames with a comma and Umlauts in it like "Döe, Jähn"
Affected: before 1.39.14, 1.43.4, 1.44.1
CVE-2026-34090
7.5
0%
May 11
Suggested investigations: Handle suppressed usernames
Affected: 1.45.0 before 1.45.2
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