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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.

PUBLISHED Reserved 2026-05-03 | Published 2026-05-04 | Updated 2026-05-04 | Assigner VulDB




MEDIUM: 5.3CVSS: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
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR

Problem types

OS Command Injection

Command Injection

Product status

0.2.0
affected

Timeline

2026-05-03:Advisory disclosed
2026-05-03:VulDB entry created
2026-05-03:VulDB entry last update

Credits

BruceJqs (VulDB User) reporter

VulDB CNA Team coordinator

References

vuldb.com/vuln/360905 (VDB-360905 | privsim mcp-test-runner MCP index.ts child_process.spawn os command injection) vdb-entry technical-description

vuldb.com/vuln/360905/cti (VDB-360905 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/submit/807541 (Submit #807541 | privsim mcp-test-runner 0.2.0, Commit 83c84ed053f534774f7de935aeaa7698a5e5f9dc Command Injection) third-party-advisory

github.com/privsim/mcp-test-runner/issues/24 issue-tracking

github.com/BruceJqs/public_exp/issues/37 exploit issue-tracking

github.com/privsim/mcp-test-runner/ product

cve.org (CVE-2026-7730)

nvd.nist.gov (CVE-2026-7730)

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