hunt-cors
Hunt CORS Misconfiguration — origin-reflection with credentials, null-origin trust, subdomain-regex bypass (unanchored vs unescaped-dot vs prefix-only), pre-flight (OPTIONS) gating bypass, postMessage origin checks. High only when an attacker-controlled origin can perform a CREDENTIALED cross-origin read of sensitive data and you have proven it in a browser. Use when testing API endpoints, SPAs, or any app emitting Access-Control-* headers.
75
94%
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Critical
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Security
1 critical severity finding. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
E004: Prompt injection detected in skill instructions.
What this means
Detected a prompt injection in the skill instructions. The skill contains hidden or deceptive instructions that fall outside its stated purpose and attempt to override the agent’s safety guidelines or intended behavior.
Why it was flagged
This document provides explicit, actionable instructions and proof-of-concept code to exploit CORS misconfigurations and exfiltrate authenticated sensitive data (curl commands with cookies, crafted Origin payloads, browser PoCs using fetch with credentials and OOB/exfil techniques), which is clearly malicious/deceptive guidance.
- Repository
- elementalsouls/Claude-BugHunter
- Commit
58017df
- Audited
- Security analysis
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