CVE-2026-80199
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.
- Affected products
- Kimai
- Fix
- Available
- CVSS 4.0
- 6.3 MEDIUM
- CVSS 3.1
- 3.7 LOW
- EPSS
- 0.2% (16th percentile)
- Weakness
- CWE-208
- NVD status
- Deferred
- Published
- 2026-08-25
CVE-2026-80199 at NVD
No indexed exploits for CVE-2026-80199 yet
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No exploit for CVE-2026-80199 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.