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.
CVSS 3.7EPSS 0.248%Risk 0.38
View source- Published
- 2026-08-26 05:18:27
- Affected versions
- <2.54.0
- Type
- Web application
- Last modified
- 2026-08-26 13:19:24
- Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N