Vulnerability · Published Dec 19, 2025 · Assigned by VulnCheck
CVE-2023-53957Kimai 1.30.10 SameSite Cookie Vulnerability Session Hijacking
Critical 9.8
In plain English
A critical-severity security flaw in Kimai from Kimai. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 48% of all known vulnerabilities).
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)0.6%top 51.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Kimai 1.30.10 contains a SameSite cookie vulnerability that allows attackers to steal user session cookies through malicious exploitation. Attackers can trick victims into executing a crafted PHP script that captures and writes session cookie information to a file, enabling potential session hijacking.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | kimai/kimai | no fix listed | GHSA-cv8h-r7r5-vwj9 |
Affected products (as reported)
Weakness: CWE-1275 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- ExploitDB-51278 exploit
- Official Product Homepage product
- VulnCheck Advisory: Kimai 1.30.10 SameSite Cookie Vulnerability Session Hijacking third-party-advisory