CVE-2026-111642
HIGH
CVSS 8.8
Published: 2026-10-16
Modified: 2026-10-16
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Threat Intelligence Pending
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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.
Quick Facts
| CVE ID | CVE-2026-111642 |
| CVSS Score | 8.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-16 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/fastapiadmin/FastapiAdmin/blob/v3.0/backe…
- https://github.com/fastapiadmin/FastapiAdmin/blob/v3.0/backe…
- https://hackmd.io/@hieuPenguinnn/fastapiadmin-unauthenticate…
- https://www.vulncheck.com/advisories/fastapiadmin-through-3.…
- https://hackmd.io/@hieuPenguinnn/fastapiadmin-unauthenticate…