CVE-2026-59149
CVE-2026-59149 · Mockoon: Path traversal in templated `filePath` lets a request escape the served directory (prefix-only base check)
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, 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.
CVSS 6.5 · Medium · EPSS 0.5% · 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-8wqc-v2q8-vff2
- https://github.com/mockoon/mockoon/pull/2255
- https://github.com/mockoon/mockoon/commit/b42bdfb7f82e83f0e81bea8e6fe41adf5ec82585
- https://github.com/mockoon/mockoon/releases/tag/v9.7.0
- https://mockoon.com/releases/9.7.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-59149