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Advisories

Kimai before 2.54.0 Username Enumeration via Timing Oracle

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severity
low
date
Affecting

  • kimai >= 0, < 2.54.0

CWE
  • CWE-208 Observable Timing Discrepancy
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Credit
melnicek
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.

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