---
id: CVE-2026-113663
title: >-
  AG2: Newline injection in SandboxShellTool bypasses allowed=[...] and
  readonly=True, enabling arbitrary command execution
summary: >-
  AG2 is an open-source AgentOS. From 0.13.2 until ag2 1.1.1, and from autogen
  0.13.2 to 0.14.1, SandboxShellTool configurations using allowed=[...] or
  readonly=True rely on ShellAdapter._filter and contains_shell_operator in
  ag2/tools/san…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-78
  - CWE-184
vendor: ag2ai
product: ag2
affected:
  - 'ag2 >= 0.13.2, < 1.1.1'
  - 'autogen >= 0.13.2, <= 0.14.1'
published: '2026-11-05'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T22:53:40.444Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-113663'
references:
  - url: 'https://github.com/ag2ai/ag2/security/advisories/GHSA-2h4w-29cv-2cmv'
    label: 'https://github.com/ag2ai/ag2/security/advisories/GHSA-2h4w-29cv-2cmv'
  - url: >-
      https://github.com/ag2ai/ag2/commit/3cd86726bb731eb11d6270f0ef9e50e42b5abb39
    label: >-
      https://github.com/ag2ai/ag2/commit/3cd86726bb731eb11d6270f0ef9e50e42b5abb39
  - url: 'https://github.com/ag2ai/ag2/releases/tag/v1.1.1'
    label: 'https://github.com/ag2ai/ag2/releases/tag/v1.1.1'
tags:
  - cve.org
ingestedAt: '2026-11-05T23:41:31.934Z'
---

## Overview

AG2 is an open-source AgentOS. From 0.13.2 until ag2 1.1.1, and from autogen 0.13.2 to 0.14.1, SandboxShellTool configurations using allowed=[...] or readonly=True rely on ShellAdapter._filter and contains_shell_operator in ag2/tools/sandbox/filter.py and ag2/tools/sandbox/adapter/shell.py to validate a command prefix and reject selected shell syntax. The filter omits newline and carriage-return separators, while the accepted raw string is passed to sh -c, allowing an attacker-influenced agent command to execute an additional arbitrary statement. With the default LocalEnvironment backend, the injected statement runs as a host subprocess with the privileges of the agent process and can affect confidentiality, integrity, and availability. This issue is fixed in ag2 version 1.1.1.

## Affected

- `ag2 >= 0.13.2, < 1.1.1`
- `autogen >= 0.13.2, <= 0.14.1`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.