@Mockoon/commons-server: Unauthenticated admin API + wildcard CORS allows mock-state hijack and secret theft — GHSA-RQX4-3F6Q-3X2V

Summary

## Summary Mockoon's admin API ([`commons-server/src/libs/server/admin-api.ts`](https://github.com/mockoon/mockoon/blob/4375a8f/packages/commons-server/src/libs/server/admin-api.ts)) is mounted on the same Express listener as the user-defined mock routes, **enabled by default** in every shipped runtime (commons-server, CLI, serverless), serves **`Access-Control-Allow-Origin: *` on every endpoint with all HTTP…

Timeline

Published by source

2026-09-11

Risk context

• Reported severity or threat level: high.
• Reported CVSS score: 8.8 out of 10.
• Reported EPSS value: 0.00262.
• Review exposure for the affected product or family: npm: @mockoon/commons-server | npm: @mockoon/cli.

Product

npm: @mockoon/commons-server | npm: @mockoon/cli

What to do

General, cautious steps (verify details in the official source):

• Prioritize patching or mitigation immediately (treat as actively risky).
• Identify affected product versions in your inventory and verify whether you are impacted.
• Apply vendor patches/updates or recommended mitigations as soon as available.
• Read the official advisory for exact affected versions and remediation steps.

Official advisory

• Read the official source
• CVE Record
• NVD

Evidence and provenance

Canonical advisory ID

GHSA-RQX4-3F6Q-3X2V

Source

GitHub

Vendor

GitHub

Published by source

2026-09-11

Last source activity

2026-09-11

Additional identifiers

CVE-2026-59148

Curated by

hlukh.ch

Related advisories and connections

These advisories are connected by shared CVE, product, vendor, source, or time signals.