/postmessage-xss
Detect postMessage handlers that trust unvalidated origins or write attacker-controlled data to dangerous DOM sinks.
$ npx -y skills add allsmog/vuln-scout --skill postmessage-xss --agent claude-codeHow it fires
How this skill gets triggered: by you, by Claude, or both.
- Fires itselfAuto-invocation. Claude auto-loads it when your prompt matches the work.
- You can call itInvoke it directly when you want it.
- Slash command
/postmessage-xss
Context preview
The summary Claude sees to decide when to auto-load this skill.
Detect postMessage handlers that trust unvalidated origins or write attacker-controlled data to dangerous DOM sinks.
AI-powered whitebox penetration testing plugin for Claude Code. 9 languages, 22 skills, 7 autonomous agents. STRIDE threat modeling, OWASP 2025 coverage, polyglot monorepo support.
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