CVE-2026-80200

EUVD-2026-66222
Kimai before 2.53.0 contains an open redirect vulnerability in the SAML authentication success handler that accepts unvalidated RelayState POST parameters as redirect destinations. Attackers with IdP access can supply malicious RelayState values to redirect authenticated users to attacker-controlled URLs for credential theft or phishing attacks.
Open Redirect
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
VulnCheckCNA
4.7 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 20.91%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
kimaikimai
𝑥
< 2.53.0
CNA
Common Weakness Enumeration
References
https://github.com/kimai/kimai/security/advisories/GHSA-3jp4-mhh4-gcgr
https://www.vulncheck.com/advisories/kimai-before-2.53.0-open-redirect-via-relaystate