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CVE-2026-111642— FastapiAdmin through 3.0 Hard-Coded JWT Secret Privilege Escalation

Quick assessment

Affected
fastapiadmin FastapiAdmin
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FastapiAdmin 3.0 及更早版本在 中硬编码了 JWT 签名密钥，这使得低权限用户能够伪造令牌，冒充超级用户。攻击者可以通过未认证的 接口注册账户并登录，随后伪造 HS256 令牌：保留自身的 ，但将 字段设置为超级用户名，从而获取超级用户权限。

CVSS 8.8 · High

Possible ATT&CK Techniques 1 AI

T1558.003 · Kerberoasting

Affected Version Matrix 1

VendorProduct Version RangeStatus
fastapiadmin FastapiAdmin ≤ 3.0 affected
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I. Basic Information for CVE-2026-111642

Vulnerability Information
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Vulnerability Title
FastapiAdmin through 3.0 Hard-Coded JWT Secret Privilege Escalation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用硬编码的密码学密钥
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
fastapiadmin FastapiAdmin 0 ~ 3.0 -

II. Public POCs for CVE-2026-111642

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III. Intelligence Information for CVE-2026-111642

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Vendor Advisories for CVE-2026-111642 (1)

Security Blog Posts for CVE-2026-111642 (1)

IV. Related Vulnerabilities

Same product: FastapiAdmin
Same vendor: fastapiadmin
Same weakness: CWE-321

V. Comments for CVE-2026-111642

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