CVE-2026-9098_CVE-2026-9098

9.1 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

In Casdoor versions 2.362.0 and earlier, the SAML callback handler in controllers/auth.go accepts any well-formed SAMLResponse sent to /api/acs without verifying that it corresponds to an AuthnRequest previously issued by Casdoor. Additionally, if an administrator disables or deletes an IdP (Identity Provider) after a SAML flow has started, the handler still processes the response using the provider snapshot loaded at the start of the request. As a result, an attacker controlling a registered upstream IdP can send unsolicited SAML responses, or replay a legitimately captured response in a different session or after the original flow has ended. In both cases, Casdoor accepts the response and issues a session, enabling persistent unauthorized access.

AI Analysis

Unauthenticated SAML response acceptance vulnerability in Casdoor, allowing attackers to gain unauthorized access by sending unsolicited SAML responses or replaying captured responses.

Basic Information

ID CVE-2026-9098

Source certcc

Published May 28, 2026 at 16:31

Modified Jun 2, 2026 at 16:43

Affected Product

Vendor Casdoor

Product Casdoor

Affected Versions Casdoor Casdoor 0

AI Assessment

AI Score 9.1 / 10

AI Severity Critical

Vendor Casdoor

Product Casdoor

Version 2.362.0 and earlier

References

kb.cert.org /vuls/id/780781

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