CVE-2026-9093: Casdoor

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

In Casdoor versions 2.362.0 and earlier, the SAML service provider implementation does not validate the AudienceRestriction element in SAML assertions. The buildSp function in object/saml_sp.go never sets AudienceURI on the gosaml2 SAMLServiceProvider struct and never inspects WarningInfo.NotInAudience. This allows assertions issued for other service providers to be accepted by Casdoor.

Affected products

• Casdoor Casdoor: up to and including 2.362.0

Published 2026-05-28. Last modified 2026-06-17.