CVE-2026-111642
FastapiAdmin through 3.0 Hard-Coded JWT Secret Privilege Escalation
fastapiadmin FastapiAdmin
CVSS
8.7HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 16 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.36%Chance of exploitation activity in the next 30 days, higher than 28% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- FastapiAdminaffected: all versions through 3.0CVE List
References 4
- vulncheck.com/advisories/fastapiadmin-through-3.0-hard-coded-jwt-secret-privilege-escalationAdvisoryvia CVE List
- hackmd.io/@hieuPenguinnn/fastapiadmin-unauthenticated-autologin-and-hardcoded-jwt-secretExploitvia CVE List
- github.com/fastapiadmin/FastapiAdmin/blob/v3.0/backend/app/config/setting.py#L67Referencevia CVE List
- github.com/fastapiadmin/FastapiAdmin/blob/v3.0/backend/app/core/dependencies.py#L72-L112Referencevia CVE List