---
id: CVE-2026-2256
aliases:
  - GHSA-4gc2-344q-r2rw
  - PYSEC-2026-2668
title: MS-Agent vulnerable to Command Injection
summary: MS-Agent vulnerable to Command Injection
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N'
vendor: ms-agent
product: ms-agent
ecosystem: pip
affected:
  - ms-agent <= 1.6.0rc1
published: '2026-03-02'
updated: '2026-07-13'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-4gc2-344q-r2rw'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-2256'
  - url: 'https://github.com/Itamar-Yochpaz/CVE-2026-2256-PoC'
  - url: 'https://github.com/modelscope/ms-agent'
  - url: >-
      https://medium.com/@itamar.yochpaz/cve-2026-2256-from-ai-prompt-to-full-system-compromise-a4114c718326
  - url: >-
      https://www.hiddenlayer.com/research/indirect-prompt-injection-of-claude-computer-use
  - url: 'https://www.kb.cert.org/vuls/id/431821'
tags:
  - osv
  - pip
  - exploit-available
epss: 0.01611
epssPercentile: 0.74869
ingestedAt: '2026-07-13T18:57:52.605Z'
exploits:
  github: 3
  githubRepos:
    - 'https://github.com/Itamar-Yochpaz/CVE-2026-2256-PoC'
    - >-
      https://github.com/melbratic/CVE-2026-2256-Threat-Model----ms-agent-Command-Injection
    - 'https://github.com/mruniversity/CVE-2026-2256-'
  checkedAt: '2026-09-23T07:13:54.719Z'
exploitAvailable: true
---

## Overview

A Command Injection vulnerability in ModelScope's MS-Agent versions v1.6.0rc1 and earlier exists, allowing an attacker to execute arbitrary operating system commands through crafted prompt-derived input.

## Affected packages

- `ms-agent <= 1.6.0rc1`

## Remediation

Refer to the advisory for the patched release.