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.
Published: 2026-10-16
Score: 9.3 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Authentication bypass allowing super‑administrator control
Action: Immediate Patch
AI Analysis

Impact

This vulnerability arises from a hard‑coded JWT secret in Simple Admin Core 1.8.7, enabling any unauthenticated user to forge a token with the secret and a roleId of 001. The forged token grants full administrative privileges over users, roles, menus, API authorities, configuration, and tokens, effectively bypassing authentication.

Affected Systems

The issue affects the Simple Admin Core product from the vendor suyuan32, specifically versions up to and including 1.8.7.

Risk and Exploitability

The CVSS score of 9.3 indicates a critical severity, but the EPSS score is not available and the vulnerability is not listed in CISA’s KEV catalog. Because the secret is baked into the code, any attacker can craft a valid token without needing any credentials or network access, making exploitation straightforward and immediate.

Generated by OpenCVE AI on October 16, 2026 at 19:07 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the latest vendor patch that removes the hard‑coded secret and enforces proper secret management.
  • If a patch is unavailable, replace the default Auth.AccessSecret in api/etc/core.yaml with a randomly generated, strong value and reconfigure the application to validate JWTs accordingly.
  • Restrict access to the API by implementing network segmentation or a firewall rule that limits untrusted traffic to the management endpoints.

Generated by OpenCVE AI on October 16, 2026 at 19:07 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 19 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 19 Oct 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Suyuan32
Suyuan32 simple-admin-core
Vendors & Products Suyuan32
Suyuan32 simple-admin-core

Fri, 16 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass
Weaknesses CWE-321
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': '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'}

Subscriptions

Suyuan32 Simple-admin-core
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-19T13:35:10.955Z

Reserved: 2026-10-16T14:31:20.316Z

Link: CVE-2026-111690

cve-icon Vulnrichment

Updated: 2026-10-19T13:34:55.284Z

cve-icon NVD

Status : Deferred

Published: 2026-10-16T18:17:52.350

Modified: 2026-10-19T14:16:59.640

Link: CVE-2026-111690

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-19T12:54:01Z

Weaknesses
  • CWE-321

    Use of Hard-coded Cryptographic Key