Vulnerability · Published Sep 20, 2026 · Assigned by VulDB

CVE-2026-9404403-lovepreetSingh MCP route.ts create_file path traversal

High 7.3

In plain English

A high-severity path traversal in MCP from 03-lovepreetSingh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities).

Severity (CVSS 3.1)7.3High

Exploit odds (30 days)0.6%top 50.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A vulnerability was identified in 03-lovepreetSingh MCP up to f95d035c5317fad81af9828286631053ccb23546. This issue affects the function create_file of the file app/api/mcp/route.ts. Such manipulation of the argument filePath/content leads to path traversal. The attack can be launched remotely. The exploit is publicly available and might be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The project was informed of the problem early through an issue report but has not responded yet.

Affected products (as reported)

Vendor	Product	Versions
03-lovepreetSingh	MCP	f95d035c5317fad81af9828286631053ccb23546

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References

VDB-407973 | 03-lovepreetSingh MCP route.ts create_file path traversal vdb-entry, technical-description
VDB-407973 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
CVE-2026-94044 | CVE Analysis and Report third-party-advisory
Submit #949284 | 03-lovepreetSingh MCP f95d035c5317fad81af9828286631053ccb23546 Path Traversal third-party-advisory
https://github.com/03-lovepreetSingh/MCP/issues/3 exploit, issue-tracking
https://github.com/03-lovepreetSingh/MCP/ product