OS Command Injection Vulnerability in mac-shell-mcp by cfdude
CVE-2026-108953

8.5HIGH

Key Information:

Vendor

Cfdude

Status
Mac-shell-mcp
Vendor
CVE Published:
12 October 2026

What is CVE-2026-108953?

The mac-shell-mcp platform prior to version 2.0.0 is susceptible to an OS command injection flaw. This vulnerability allows unauthorized users to bypass the command whitelist by injecting shell metacharacters through the 'execute_command' arguments. Attackers can exploit this issue to execute restricted commands on the server, potentially compromising system integrity. Proper sanitation of input and robust validation mechanisms must be employed to prevent such exploits.

Affected Version(s)

mac-shell-mcp 0 < 2.0.0

References

https://github.com/cfdude/mac-shell-mcp/issues/45
issue-tracking
https://github.com/cfdude/mac-shell-mcp/commit/932ce733cd...
patch
https://github.com/cfdude/mac-shell-mcp/blob/1c1708201abb...
technical-description

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Bandana (HackWitHer), APIsec Research Labs
.