broken-authentication
This skill should be used when the user asks to "test for broken authentication vulnerabilities", "assess session management security", "perform credential stuffing tests", "evaluate password policies", "test for session fixation", or "identify authentication bypass flaws". It provides comprehensive techniques for identifying authentication and session management weaknesses in web applications.
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Critical
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Security
2 findings: 1 critical severity, 1 high severity. Installing this skill is not recommended: please review these findings carefully if you do intend to do so.
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
This document provides detailed, actionable instructions for account takeover and authentication bypass techniques (brute force, credential stuffing, session fixation, JWT manipulation, host-header injection, OTP brute-force) plus evasion tactics—presenting a high risk for malicious abuse.
W007: Insecure credential handling detected in skill instructions.
What this means
The skill handles credentials insecurely by requiring the agent to include secret values verbatim in its generated output. This exposes credentials in the agent’s context and conversation history, creating a risk of data exfiltration.
Why it was flagged
The skill includes explicit examples and steps that capture and then embed sensitive values verbatim (passwords, session cookies, JWTs, reset tokens, test account credentials) into requests/commands, requiring the LLM to handle secrets directly and therefore posing high exfiltration risk.
- Repository
- zebbern/claude-code-guide
- Commit
af7d491
- Audited
- Security analysis
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