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API Fuzzing for Bug Bounty

This skill should be used when the user asks to "test API security", "fuzz APIs", "find IDOR vulnerabilities", "test REST API", "test GraphQL", "API penetration testing", "bug bounty API testing", or needs guidance on API security assessment techniques.

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SKILL.md
Quality
Evals
Security

Security

2 findings — 1 critical severity, 1 medium severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.

Critical

E006: Malicious code pattern detected in skill scripts

What this means

Detected high-risk code patterns in the skill content — including its prompts, tool definitions, and resources — such as data exfiltration, backdoors, remote code execution, credential theft, system compromise, supply chain attacks, and obfuscation techniques.

Why it was flagged

Malicious code pattern detected (high risk: 1.00). The skill content contains explicit, actionable instructions for data exfiltration and credential theft (e.g., iplogger image for IP disclosure, SSRF/LFI examples, SMB/URL callbacks, examples showing retrieval of passwords/JWTs), plus clear remote-command-execution vectors (command injection payloads, path traversal to sensitive files) and evasion techniques (rate-limit bypass, IP rotation), which together enable deliberate malicious abuse rather than benign guidance only.

Report incorrect finding
Medium

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

What this means

The skill exposes the agent to untrusted, user-generated content from public third-party sources, creating a risk of indirect prompt injection. This includes browsing arbitrary URLs, reading social media posts or forum comments, and analyzing content from unknown websites.

Why it was flagged

Third-party content exposure detected (high risk: 1.00). The skill's core workflow (see Step 1: API Reconnaissance and examples like sub-skills/step-1-api-reconnaissance.md and other steps) explicitly instructs scanning and fetching public targets (e.g., kr scan https://target.com, checking /swagger.json, archive.org, site JS files and GraphQL endpoints), which requires ingesting untrusted, user-controlled web content that can influence subsequent tool use and actions.

Repository
Dokhacgiakhoa/antigravity-ide
Audited
Security analysis
Snyk

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