# CVE-2026-80200

## Summary

- **CVE ID:** CVE-2026-80200
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N)
- **CWE:** CWE-601
- **Published:** Aug 25, 2026
- **Last Modified:** Aug 28, 2026

## Description

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.

## Affected Products

- kimai — kimai (0)
- kimai — kimai (2.53.0)

## References

- [CNA](https://github.com/kimai/kimai/security/advisories/GHSA-3jp4-mhh4-gcgr)
- [CNA](https://www.vulncheck.com/advisories/kimai-before-2.53.0-open-redirect-via-relaystate)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 21.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._