PT-2026-55354 · Go · Github.Com/Casdoor/Casdoor

Published 2026-05-28 · Updated 2026-05-28

OSV

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Fix

Related Identifiers

GHSA-3W4H-G9F5-J84P

Affected Products

Github.Com/Casdoor/Casdoor

References · 4

• https://osv.dev/vulnerability/GHSA-3w4h-g9f5-j84p · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-9093 · Security Note
• https://github.com/casdoor/casdoor · Note
• https://kb.cert.org/vuls/id/780781 · Note