CVE-2026-59149
MEDIUMMockoon: Path traversal in templated `filePath` lets a request escape the served directory (prefix-only base check)
Title source: cnaDescription
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.
References (5)
Core 5
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/mockoon/mockoon/security/advisories/GHSA-8wqc-v2q8-vff2
X_Refsource_Misc x_refsource_misc
https://github.com/mockoon/mockoon/pull/2255
X_Refsource_Misc x_refsource_misc
https://github.com/mockoon/mockoon/commit/b42bdfb7f82e83f0e81bea8e6fe41adf5ec82585
X_Refsource_Misc x_refsource_misc
https://github.com/mockoon/mockoon/releases/tag/v9.7.0
X_Refsource_Misc x_refsource_misc
https://mockoon.com/releases/9.7.0
Scores
CVSS v3
6.5
EPSS
0.0033
EPSS Percentile
25.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-22
CWE-23
Status
published
Products (1)
mockoon/mockoon
< 9.7.0
Published
Jul 09, 2026
Tracked Since
Jul 10, 2026