CVE-2026-7730CWE-77CWE-78

privsim mcp-test-runner MCP index.ts child_process.spawn os command injection

Medium · published May 4, 2026

CVSS v4.0
5.3
EPSS
2%
Percentile
78.5
In the wild
Unconfirmed
What it is

A weakness has been identified in privsim mcp-test-runner 0.2.0. Impacted is the function child_process.spawn of the file src/index.ts of the component MCP Interface. Executing a manipulation of the argument command can lead to os command injection. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.01817 · 78.5th percentile
Weaknesses
CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection'); CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-05-04T04:00Z
EPSS history
Timeline
  • 04 MAY 04:00Z
    privsim mcp-test-runner MCP index.ts child_process.spawn os command injection
    cvelistv5