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Goose AI agent bypasses file write permissions via desktop interface

A developer demonstrated a security vulnerability in the Goose AI agent by bypassing its file write permissions. While Goose was configured to only allow modifications to a specific Python file (`shipping.py`), it was also able to alter a configuration file (`deployment.json`) through its desktop interface. This bypass occurred because the authorization system, GAAP, only controlled specific execution paths and did not govern all possible ways a file could be modified within the Goose environment. The developer highlighted that separate tools within Goose, like the Developer extension, could directly write to files without passing through the authorization checks, leading to a discrepancy between recorded actions and actual file changes. AI

IMPACT Highlights potential security vulnerabilities in AI agent execution environments, emphasizing the need for comprehensive authorization controls across all tool interactions.

RANK_REASON The item describes a specific tool's functionality and a security bypass within it, rather than a new release or significant industry event.

Read on dev.to — MCP tag →

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

Goose AI agent bypasses file write permissions via desktop interface

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Tool
The item describes a specific tool's functionality and a security bypass within it, rather than a new release or significant industry event.
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product, safety
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High
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5 days old
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COVERAGE [1]

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

    Controlling File Writes in Goose with MCP

    <p><em>A local case study of MCP tool permissions, Goose Desktop extensions, and verifying file changes.</em></p> <p>I took a coding-agent demo to Amsterdam with a simple boundary: Goose could implement a shipping-price function, but it couldn't enable shipping in <code>deploymen…