CVE-2026-91998: fallo crítico en casdoor
Casdoor through 4.4.0 Cross-Organization User Administration via /api/mcp
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
48Vexday Risk Score
Sin señal de explotación. Ella tiene prueba de concepto pública.
ssvc Attendcvss 9.4epss 0.6%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Productos afectados
casdoor · casdoorPoCs públicas encontradas — 1
cve_referencegithub.com/geo-chen/oss/blob/main/casdoor.md#finding-2-application-credential-authorization-bypass-in-apimcp-enables-unrestricted-cross-organization-user-administrationno verificado⚠ Recursos públicos, para evaluar la exposición de sistemas que controlas o estás autorizado a probar. Prueba solo con autorización.
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Referencias
https://github.com/casdoor/casdoorhttps://github.com/casdoor/casdoor/blob/v4.4.0/authz/authz.go#L174-L176https://github.com/casdoor/casdoor/blob/v4.4.0/mcpself/user.gohttps://github.com/casdoor/casdoor/blob/v4.4.0/routers/base.go#L122-L154https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-2-application-credential-authorization-bypass-in-apimcp-enables-unrestricted-cross-organization-user-administrationhttps://www.vulncheck.com/advisories/casdoor-through-4.4.0-cross-organization-user-administration-via-api-mcp