GHSA-3jp4-mhh4-gcgr
None · 0.0Kimai has an Open Redirect via Unvalidated RelayState in SAML ACS Handler
CVSS
0.0
EPSS
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Published
Apr 14, 2026
CISA due date
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The record
The SAML authentication success handler in Kimai returns the `RelayState` POST parameter as a redirect destination without validating the host or scheme. After a user successfully authenticates via SAML, they are redirected to an attacker-controlled URL if the IdP includes a malicious `RelayState` value. This enables phishing attacks that steal credentials or session tokens post-SSO. *Requires SAML to be enabled (non-default configuration).*
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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