---
id: CVE-2026-111690
title: Simple Admin Core through 1.8.7 Hard-Coded JWT Secret Authentication Bypass
summary: >-
  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 …
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-321
vendor: suyuan32
product: simple-admin-core
affected:
  - simple-admin-core <= 1.8.7
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:39:46.960Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111690'
references:
  - url: >-
      https://hackmd.io/@hieuPenguinnn/simple-admin-core-hardcoded-jwt-accesssecret-admin-auth-bypass
  - url: >-
      https://github.com/suyuan32/simple-admin-core/blob/v1.8.7/api/etc/core.yaml#L6-L8
  - url: 'https://github.com/suyuan32/simple-admin-core/pull/382'
  - url: >-
      https://www.vulncheck.com/advisories/simple-admin-core-through-1.8.7-hard-coded-jwt-secret-authentication-bypass
    label: >-
      VulnCheck Advisory: Simple Admin Core through 1.8.7 Hard-Coded JWT Secret
      Authentication Bypass
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.656Z'
---

## Overview

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.

## Affected

- `simple-admin-core <= 1.8.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.