CVE-2026-34090
Suggested investigations: Handle suppressed usernames
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-200 |
| Vendor | wikimedia foundation |
| Product | checkuser |
| Published | May 11, 2026 |
| Last Updated | May 11, 2026 |
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Affected Versions
Wikimedia Foundation / CheckUser
1.45.0 < 1.45.2