CVE-2026-111642
Last modified
CVE-2026-111642 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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..
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.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| fastapiadmin | FastapiAdmin | <= 3.0 |
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-111642?
How severe is CVE-2026-111642?
How do I fix CVE-2026-111642?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-111637NexoPOS through 6.2.4 contains a missing authentication vuln…5.3
- CVE-2026-111638sshportal through 1.19.5 contains a missing authorization vu…7.7
- CVE-2026-111639bbs-go through 4.4.6 contains an authentication bypass vulne…8.1
- CVE-2026-11164Use after free in Blink in Google Chrome prior to 149.0.7827…8.8
- CVE-2026-111640DooTask through 1.9.66 contains a missing authorization vuln…5.4
- CVE-2026-111641FastapiAdmin through 3.0 contains an authentication bypass v…9.8
- CVE-2026-111643Misaka Danmu Server through 2.8.9 contains an authentication…9.8
- CVE-2026-111644Misaka Danmu Server through 2.8.9 contains a missing authent…7.3
- CVE-2026-111645MrDoc through 1.1.1 contains a missing object-level authoriz…5.4
- CVE-2026-111646SurveyKing before 1.13.0 contains a missing authorization vu…5.9
- CVE-2026-111647PickMall lilishop through 5.0.0 contains an insecure direct …4.3
- CVE-2026-111648BuildAdmin through 2.3.9 contains an insecure direct object …2.7
Are you affected by CVE-2026-111642?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST