Low severity3.7NVD Advisory· Published Aug 26, 2026· Updated Oct 8, 2026
CVE-2026-80199
CVE-2026-80199
Description
Kimai before 2.54.0 contains a timing oracle vulnerability in TokenAuthenticator that allows unauthenticated attackers to enumerate valid usernames via X-AUTH-USER header. Attackers can measure response time differences when the password hasher runs only for existing users, enabling username enumeration with no login throttling protection.
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Affected products
1Patches
Vulnerability mechanics
References
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