Open redirect in kimai2 - CVE-2026-80200
Published: April 14, 2026 / Updated: September 14, 2026
Vulnerability identifier: #VU125948
CSH Severity: Low
CVSS v4: 0 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80200
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect users to an attacker-controlled site.
The vulnerability exists due to url redirection to an untrusted site in src/Saml/Security/SamlAuthenticationSuccessHandler.php when processing the RelayState parameter in the SAML ACS handler. A remote attacker can supply a malicious RelayState value to redirect users to an attacker-controlled site.
SAML must be enabled, and exploitation is limited to IdP-initiated SSO flows where a malicious RelayState value is included. User interaction is required to complete SAML authentication.
Affected software
kimai2
How to mitigate CVE-2026-80200
Install security update from vendor's website.
kimai2 - update to 2.53.0