VULNERABILITY INTELLIGENCE
CVE-2026-80199
CVSS score6.3 MEDIUM
EPSS probability0.31%
CISA KEVNot currently listed
Published2026-08-26
Last modified2026-10-08
CVSS vectorCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
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.
Weakness classification
- CWE-208: Observable Timing Discrepancy