CVE-2026-111690

EUVD-2026-102981
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: 37.4%
Common Weakness Enumeration
References
https://github.com/suyuan32/simple-admin-core/blob/v1.8.7/api/etc/core.yaml#L6-L8
https://github.com/suyuan32/simple-admin-core/pull/382
https://hackmd.io/@hieuPenguinnn/simple-admin-core-hardcoded-jwt-accesssecret-admin-auth-bypass
https://www.vulncheck.com/advisories/simple-admin-core-through-1.8.7-hard-coded-jwt-secret-authentication-bypass
https://hackmd.io/@hieuPenguinnn/simple-admin-core-hardcoded-jwt-accesssecret-admin-auth-bypass