CVE-2026-91998
criticalCasdoor through 4.4.0 contains an authorization bypass vulnerability in the /api/mcp endpoint that allows attackers with any application's clientId and clientS…
Casdoor through 4.4.0 contains an authorization bypass vulnerability in the /api/mcp endpoint that allows attackers with any application's clientId and clientSecret to gain unrestricted access to user administration across all organizations. Attackers can enumerate user records including password salts and email addresses, create administrator accounts, modify existing users, and delete them in any organization by supplying legitimate credentials from a single application.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/casdoor/casdoor disclosure@vulncheck.com
- https://github.com/casdoor/casdoor/blob/v4.4.0/authz/authz.go#L174-L176 disclosure@vulncheck.com
- https://github.com/casdoor/casdoor/blob/v4.4.0/mcpself/user.go disclosure@vulncheck.com
- https://github.com/casdoor/casdoor/blob/v4.4.0/routers/base.go#L122-L154 disclosure@vulncheck.com
- https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-2-application-credential-auth... disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/casdoor-through-4.4.0-cross-organization-user-adminis... disclosure@vulncheck.com