CVE-2026-59148
CVE-2026-59148 · Mockoon: Unauthenticated admin API + wildcard CORS allows mock-state hijack and secret theft
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 8.8 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
mockoon
- Versions
- < 9.7.0: Affected
No fix published
@mockoon/commons-server npm
- Affected ranges
- SEMVER: < 9.7.0
Update to 9.7.0
@mockoon/cli npm
- Affected ranges
- SEMVER: < 9.7.0
Update to 9.7.0
Original sources
- https://github.com/mockoon/mockoon/security/advisories/GHSA-rqx4-3f6q-3x2v
- https://github.com/mockoon/mockoon/pull/2254
- https://github.com/mockoon/mockoon/commit/c420b5a56918475b8663977b51e5f986e45b3299
- https://github.com/mockoon/mockoon/releases/tag/v9.7.0
- https://mockoon.com/releases/9.7.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-59148