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CVE-2026-59148— Mockoon: Unauthenticated admin API + wildcard CORS allows mock-state hijack and secret theft

Quick assessment

Affected
mockoon mockoon
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Mockoon是mockoon团队开源的一个接口软件。 Mockoon 9.7.0之前版本存在安全漏洞，该漏洞源于admin API缺少身份验证并启用写方法，可能导致未经验证的调用者读取MOCKOON_*环境变量、写入任意进程环境变量、重写mock路由主体、状态和标头、读取事务日志和SSE流以及清除状态。

CVSS 8.8 · High EPSS 0.26% · P17

Affected Version Matrix 1

VendorProduct Version RangeStatus
mockoon mockoon < 9.7.0 affected
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I. Basic Information for CVE-2026-59148

Vulnerability Information
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Vulnerability Title
Mockoon: Unauthenticated admin API + wildcard CORS allows mock-state hijack and secret theft
Source: CVE Program / CVE List V5
Vulnerability Description
Mockoon provides way to design and run mock APIs. Prior to 9.7.0, Mockoon's admin API in commons-server/src/libs/server/admin-api.ts is mounted on the same Express listener as user-defined mock routes, enabled by default in shipped runtimes, serves Access-Control-Allow-Origin: * with write methods allowed, and has no authentication. Any unauthenticated caller who can reach the mock server port can read MOCKOON_* environment variables, write arbitrary process environment variables through /mockoon-admin/env-vars, rewrite mock route bodies, statuses, and headers through PUT /mockoon-admin/environment, read transaction logs and SSE streams, and purge state. This issue is fixed in version 9.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Mockoon 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mockoon是mockoon团队开源的一个接口软件。 Mockoon 9.7.0之前版本存在安全漏洞，该漏洞源于admin API缺少身份验证并启用写方法，可能导致未经验证的调用者读取MOCKOON_*环境变量、写入任意进程环境变量、重写mock路由主体、状态和标头、读取事务日志和SSE流以及清除状态。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mockoon mockoon < 9.7.0 -

II. Public POCs for CVE-2026-59148

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 17306 chars
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Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-59148

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Patches & Fixes for CVE-2026-59148 (1)

Vendor Advisories for CVE-2026-59148 (1)

Vendor Pages for CVE-2026-59148 (2)

IV. Related Vulnerabilities

Same product: mockoon
Same vendor: mockoon
Same weakness: CWE-306

V. Comments for CVE-2026-59148

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