CVE-2026-111690
Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass
- State
- Published
- Severity
- 9.3 Critical
- Published
- Oct 16, 2026
- Updated
- Oct 19, 2026
- Reserved
- Oct 16, 2026
Description
Simple Admin Core through 1.8.7 contains an authentication bypass vulnerability that allows unauthenticated attackers to forge super administrator tokens by using the hard-coded Auth.AccessSecret in api/etc/core.yaml. Attackers can sign a JWT with the public secret and roleId claim 001 to gain full administrative control over users, roles, menus, API authorities, configuration and tokens.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-321 Use of Hard-coded Cryptographic Key
Affected Products
| Product | Versions |
|---|---|
simple-admin-coresuyuan32 |
|
References
- https://hackmd.io/@hieuPenguinnn/simple-admin-core-hardcoded-jwt-accesssecret-admin-auth-bypassthird-party-advisory
- https://github.com/suyuan32/simple-admin-core/blob/v1.8.7/api/etc/core.yaml#L6-L8technical-description
- https://github.com/suyuan32/simple-admin-core/pull/382issue-trackingpatch
- VulnCheck Advisory: Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypassthird-party-advisory
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