Provide comprehensive techniques for testing REST, SOAP, and GraphQL APIs during bug bounty hunting and penetration testing engagements. Covers vulnerability discovery, authentication bypass, IDOR exploitation, and API-specific attack vectors.
75
70%
Does it follow best practices?
Impact
Pending
No eval scenarios have been run
Critical
Do not install without reviewing
Optimize this skill with Tessl
npx tessl skill review --optimize ./skills/api-fuzzing-bug-bounty/SKILL.mdSecurity
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.
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.
Malicious code pattern detected (high risk: 1.00). The content includes explicit, actionable techniques for data exfiltration (iplogger, SMB/DNS callbacks), remote command execution/command injection, credential theft (queries requesting passwords/JWTs), and evasion methods — patterns indicative of deliberate offensive/malicious use beyond benign documentation.
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.
Third-party content exposure detected (high risk: 1.00). The SKILL.md explicitly instructs fetching and interpreting public third-party API documentation and responses—e.g., checking /swagger.json and /openapi.json, running Kiterunner scans against https://target.com, performing GraphQL introspection queries, and checking archive.org—so untrusted web content is ingested and can materially influence subsequent tool use and actions.
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