CVE-2026-80199
LOW
NVD
CVSS Score
3.7
Severity
LOW
Published
Aug 26, 2026
Vendor
unknown
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.