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.
Metrics
Affected Vendors & Products
References
History
Wed, 26 Aug 2026 13:30:00 +0000
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| Metrics |
ssvc
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Tue, 25 Aug 2026 23:30:00 +0000
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| 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. | |
| Title | Kimai before 2.54.0 Username Enumeration via Timing Oracle | |
| First Time appeared |
Kimai
Kimai kimai |
|
| Weaknesses | CWE-208 | |
| CPEs | cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Kimai
Kimai kimai |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-08-25T23:19:05.166Z
Updated: 2026-08-26T12:12:39.269Z
Reserved: 2026-08-25T23:14:37.730Z
Link: CVE-2026-80199
Updated: 2026-08-26T12:12:13.975Z
Status : Deferred
Published: 2026-08-26T05:18:27.530
Modified: 2026-08-31T20:52:56.343
Link: CVE-2026-80199
No data.