Critical severity9.8NVD Advisory· Published Oct 16, 2026· Updated Oct 16, 2026

CVE-2026-111641

Description

FastapiAdmin through 3.0 contains an authentication bypass vulnerability that allows unauthenticated attackers to obtain sessions for any user by abusing unprotected auto-login endpoints. Attackers can list users via /api/v1/auth/auto-login/users, mint a superuser auto-login token, and exchange it for a JWT session to gain full administrative control.

Affected products

Fastapiadmin/Fastapiadminllm-fuzzy
Range: <=3.0

Patches

Vulnerability mechanics

References

github.com/fastapiadmin/FastapiAdmin/blob/v3.0/backend/app/api/v1/module_system/auth/controller.pynvd
hackmd.io/@hieuPenguinnn/fastapiadmin-unauthenticated-autologin-and-hardcoded-jwt-secretnvd
www.vulncheck.com/advisories/fastapiadmin-through-3.0-authentication-bypass-via-auto-login-endpointsnvd

News mentions

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