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

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-04 · updated 2026-10-26
Weakness: CWE-77

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

privsim mcp-test-runner: 0.2.0

References

https://github.com/BruceJqs/public_exp/issues/37
https://github.com/privsim/mcp-test-runner/
https://github.com/privsim/mcp-test-runner/issues/24
https://vuldb.com/submit/807541
https://vuldb.com/vuln/360905
https://vuldb.com/vuln/360905/cti

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