{"id":"CVE-2026-80200","title":"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","summary":"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 RelayStat…","severity":"medium","cvss":4.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N","cwe":["CWE-601"],"vendor":"kimai","product":"kimai","affected":["kimai < 2.53.0"],"published":"2026-08-26","updated":"2026-10-08","sourceUpdated":"2026-10-08T16:17:45.977","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-80200","references":[{"url":"https://github.com/kimai/kimai/security/advisories/GHSA-3jp4-mhh4-gcgr","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/kimai-before-2.53.0-open-redirect-via-relaystate","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-08-26T15:58:54.494666Z"},"epss":0.0036,"epssPercentile":0.27684,"ingestedAt":"2026-10-08T16:52:14.730Z","slug":"CVE-2026-80200","body":"## Overview\n\nKimai 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":26,"depthScoreParts":{"impact":25.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}