PT-2026-56906 · Mockoon · Mockoon

Published 2026-07-09 · Updated 2026-07-09 · CVE-2026-59148

NVD

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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.

Fix

Missing Authentication

CSRF

Incorrect Permission

Weakness Enumeration

CWE-306

CWE-352

CWE-942

CWE-732

Related Identifiers

CVE-2026-59148

Affected Products

Mockoon

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-59148 · Security Note
• https://github.com/mockoon/mockoon/pull/2254 · Note
• https://github.com/mockoon/mockoon/commit/c420b5a56918475b8663977b51e5f986e45b3299 · Note
• https://mockoon.com/releases/9.7.0 · Note
• https://github.com/mockoon/mockoon/security/advisories/GHSA-rqx4-3f6q-3x2v · Note
• https://github.com/mockoon/mockoon/releases/tag/v9.7.0 · Note