CVE-2026-111642
High
Description
FastapiAdmin through 3.0 contains a hard-coded JWT signing secret in backend/app/config/setting.py that allows low-privileged users to forge tokens impersonating the superuser. Attackers can register via the unauthenticated /api/v1/system/user/register endpoint, log in, and forge an HS256 token keeping their session_id but naming the superuser in user_name to gain superuser privileges.
SeverityHigh
CVSS8.8
Exploit probability—
ProductFastapiAdmin
PublishedOct 16, 2026
First seenOct 16, 2026
Weakness typeCWE-321CWE-321
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fastapiadmin FastapiAdmin | v ≤ 3.0 | — |
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