CVE-2026-19041
Received Received - Intake

Command Injection in MissionSquad mcp-api

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: VulDB

Description
A vulnerability has been found in MissionSquad mcp-api up to 1.11.8. The impacted element is the function this.packageService.installPackage of the file src/controllers/packages.ts of the component NPM Package Version Handler. The manipulation leads to command injection. It is possible to initiate the attack remotely. Upgrading to version 1.11.9 is sufficient to resolve this issue. The identifier of the patch is a40f54d4533ba6618e1749383a245900eeb024c1. The affected component should be upgraded.

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Meta Information

Published
2026-08-06
Last Modified
2026-08-06
Generated
2026-08-06
AI Q&A
2026-08-06
EPSS Evaluated
N/A
NVD
CVE-2026-19041
EUVD
EUVD-2026-53927

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
missionsquad mcp-api to 1.11.8 (inc)
missionsquad mcp-api to 1.11.9 (exc)
missionsquad mcp-api to 1.11.7 (exc)
missionsquad mcp-api 1.11.9

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
CWE-74 The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

Attack-Flow Graph

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Executive Summary

CVE-2026-19041 is a command injection vulnerability in MissionSquad mcp-api up to version 1.11.8. The flaw exists in the NPM package version handling where user-controlled version fields are directly concatenated into shell commands without validation. Attackers can inject malicious shell metacharacters (like &, |, >) to execute arbitrary OS commands with the privileges of the mcp-api process. The vulnerability affects endpoints like POST /packages/install and PUT /packages/:name/upgrade.

Detection Guidance

To detect this vulnerability, check if your system is running MissionSquad mcp-api versions up to 1.11.8. Inspect the src/controllers/packages.ts file for the function this.packageService.installPackage and verify if version parameters are passed directly to child_process.exec() without validation. Use commands like 'npm list @missionsquad/mcp-api' to check installed versions.

Impact Analysis

This vulnerability allows remote attackers to execute arbitrary commands on the system running the vulnerable mcp-api instance. An attacker could gain control over the server, steal data, install malware, or disrupt services. The impact depends on the privileges of the mcp-api process, which could be significant if running with elevated permissions.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and access controls. Organizations using the vulnerable software may face compliance violations, legal penalties, and reputational damage due to potential exposure of sensitive data.

Mitigation Strategies

Upgrade to MissionSquad mcp-api version 1.11.9 or later immediately. Replace any direct use of child_process.exec() with safer alternatives like execFile() or spawn(). Validate version parameters against strict allowlist regex patterns to reject shell metacharacters.

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