xss-stored

Fail

Audited by Snyk on Jul 6, 2026

Risk Level: CRITICAL
Full Analysis

HIGH W007: Insecure credential handling detected in skill instructions.

  • Insecure credential handling detected (high risk: 1.00). The prompt explicitly requires collecting and reporting discovered credentials/tokens (and saving evidence like "ssrf-aws-creds.json") and to leverage existing credentials from state, which implies outputting secret values verbatim — an exfiltration risk.

CRITICAL E006: Malicious code pattern detected in skill scripts.

  • Malicious code pattern detected (high risk: 1.00). The document is an explicit offensive playbook for exploiting stored and blind XSS — it contains step‑by‑step payloads and infrastructure instructions to exfiltrate cookies/localStorage, load remote attacker scripts, perform CSRF to create admin accounts, keylog keystrokes, and otherwise enable remote data theft and unauthorized actions.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

  • Potentially malicious external URL detected (high risk: 1.00). The skill explicitly instructs injecting external callback scripts such as (and similar //YOUR_SUBDOMAIN.xss.ht or https://ATTACKER:8080/blind) which will be fetched and executed in the victim/browser during runtime and are required for blind-XSS testing, so remote content directly controls code execution.

Issues (3)

W007
HIGH

Insecure credential handling detected in skill instructions.

E006
CRITICAL

Malicious code pattern detected in skill scripts.

W012
MEDIUM

Unverifiable external dependency detected (runtime URL that controls agent).

Audit Metadata
Risk Level
CRITICAL
Analyzed
Jul 6, 2026, 09:16 AM
Issues
3
Security Audit — snyk — xss-stored