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Critical IBM mcp-context-forge vulnerability allows unauthenticated code execution

By PulseAugur Editorial · [1 sources] ·

A critical vulnerability, CVE-2026-53710, has been discovered in IBM's mcp-context-forge, specifically within its python_sandbox_server component. This flaw allows for a complete sandbox escape, enabling remote, unauthenticated attackers to execute arbitrary code. The vulnerability arises from an insufficient allowlist of built-in Python functions, where the presence of `getattr` permits attackers to navigate object attributes and ultimately call `subprocess.Popen` to run commands outside the intended sandbox. IBM has released version 1.0.2 to address this issue, and users are advised to upgrade and restrict network access to the `execute_code` endpoint. AI

IMPACT This vulnerability in IBM's mcp-context-forge could expose AI systems relying on it to remote code execution, potentially compromising sensitive data or system integrity.

RANK_REASON Security vulnerability disclosure for a specific software component.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Critical IBM mcp-context-forge vulnerability allows unauthenticated code execution

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30 / 100
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Tool
Security vulnerability disclosure for a specific software component.
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product, safety
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High
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Breaking (< 6h)
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COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · StarkMan ·

    The Sandbox That Was Not One: CVE-2026-53710 in IBM mcp-context-forge

    <h1> The Sandbox That Was Not One: CVE-2026-53710 in IBM mcp-context-forge </h1> <p>An MCP gateway exists to sit between an AI client and a set of tools, and IBM's mcp-context-forge includes a python_sandbox_server component meant to execute untrusted code safely. A flaw tracked …

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