Timing Attack Affecting kimai/kimai package, versions <2.54.0
Threat Intelligence
Exploit Maturity
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
Proof of Concept
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Test your applications- Snyk IDSNYK-PHP-KIMAIKIMAI-16109627
- published19 Apr 2026
- disclosed17 Apr 2026
- creditmelnicek
Introduced: 17 Apr 2026
CVE NOT AVAILABLE CWE-208 (opens in a new tab)Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade kimai/kimai to version 2.54.0 or higher.
Overview
Affected versions of this package are vulnerable to Timing Attack via the TokenAuthenticator process. An attacker can determine valid usernames by measuring response time differences when submitting authentication requests with the X-AUTH-USER header.