CVE-2026-59149

Mockoon provides way to design and run mock APIs. Prior to 9.7.0, a FILE response whose filePath embeds request data is confined by getSafeFilePath in packages/commons-server/src/libs/server/server.ts with resolvedPath.startsWith(staticBaseDir). That prefix test has no path-separator boundary, so a ../-escaped path whose absolute form string-prefixes the base directory passes, allowing an unauthenticated client to read files from sibling paths outside the served directory through HTTP sendFile, WebSocket, or callbacks. This issue is fixed in version 9.7.0.

• CWE-22
• CWE-23

• https://github.com/mockoon/mockoon/commit/b42bdfb7f82e83f0e81bea8e6fe41adf5ec82585
• https://github.com/mockoon/mockoon/pull/2255
• https://github.com/mockoon/mockoon/releases/tag/v9.7.0
• https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2
• https://mockoon.com/releases/9.7.0
• https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2

Published

Jul 9, 2026

Last Modified

Jul 10, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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