Path Traversal Vulnerability in MCP Interface by Ryanjoachim
CVE-2026-7728

5.3MEDIUM

Key Information:

Vendor

Ryanjoachim

Status
Mcp-rtfm
Vendor
CVE Published:
4 May 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7728?

A security vulnerability has been identified in the MCP Interface of the mcp-rtfm product. This issue allows an attacker to manipulate the function get_doc_content/read_doc/update_doc through the argument docFile, leading to unauthorized access to files outside the intended directory structure. The exploit can be executed remotely, which raises significant security concerns. A patch has been provided to address this vulnerability, and it is highly recommended to apply it to mitigate potential risks.

Affected Version(s)

mcp-rtfm 0.1.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7728 - Proof of Concept

References

https://vuldb.com/vuln/360903
vdb-entrytechnical-description
https://vuldb.com/vuln/360903/cti
signaturepermissions-required
https://vuldb.com/submit/807538
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

BruceJqs (VulDB User)
.