Affected versions of `mockserve` resolve relative file paths, resulting in a directory traversal vulnerability. A malicious actor can use this vulnerability to access files outside of the intended directory root, which may result in the disclosure of private files on the vulnerable system.

**Example request:**
```http
GET /../../../../../../../../../../etc/passwd HTTP/1.1
host:foo
```

## Recommendation

No patch is available for this vulnerability.

It is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.

Affected Packages

npm mockserve

Affected versions: 0 (last affected: 2.0.6)

Related CVEs

CVE-2017-16146

Key Information

GHSA ID

GHSA-vgjp-vh3c-32v3

Published

July 23, 2018 8:46 PM

Last Modified

September 7, 2023 8:37 PM

CVSS Score

7.5 /10

Primary Ecosystem

npm

Primary Package

mockserve

GitHub Reviewed

✓ Yes

Dataset

Last updated: July 6, 2025 6:30 AM

Data from GitHub Advisory Database. This information is provided for research and educational purposes.