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Vulnerability · Published May 4, 2026 · Assigned by VulDB

CVE-2026-7730privsim mcp-test-runner MCP index.ts child_process.spawn os command injection

Medium 6.3

In plain English

A medium-severity OS command injection in mcp-test-runner from privsim. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)1.2%top 31.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
privsim mcp-test-runner 0.2.0

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References