CVE-2026-59149

MEDIUM

Mockoon: Path traversal in templated `filePath` lets a request escape the served directory (prefix-only base check)

Title source: cna
STIX 2.1

Description

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

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