Improper Neutralization of Special Elements Used in a Template Engine in kimai2 - CVE-2026-23626
Published: January 19, 2026
Vulnerability identifier: #VU121645
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2026-23626
CWE-ID: CWE-1336
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Kevin Papst
Affected software:
kimai2
kimai2
Detailed vulnerability description
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to server-side template injection (SSTI) issue. A remote administrator can deploy a malicious Twig template that extracts sensitive information.
How to mitigate CVE-2026-23626
Install updates from vendor's website.