stealth-browser

Fail

Audited by Snyk on May 18, 2026

Risk Level: CRITICAL
Full Analysis

HIGH W007: Insecure credential handling detected in skill instructions.

  • Insecure credential handling detected (high risk: 1.00). The skill asks the user to supply CAPTCHA API keys and proxy credentials and includes examples that embed plaintext secrets (e.g., proxy URLs, API keys, and a hardcoded password), which would require the agent to accept and/or output secret values verbatim—an exfiltration risk.

CRITICAL E006: Malicious code pattern detected in skill scripts.

  • Malicious code pattern detected (high risk: 0.90). The package is explicitly built to evade detection and bypass protections (Cloudflare, CAPTCHAs), automate logins, persist sessions and rotate proxies — highly dual-use and readily enables account takeover, scraping of protected content, and abuse of online services; I found no obfuscated backdoor, remote shell, or covert exfiltration, but the intentional anti-detection and automated credential/session persistence behaviors present a high abuse risk.

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

  • Third-party content exposure detected (high risk: 1.00). The skill autonomously opens and interacts with arbitrary public websites (e.g., page.get(url) in scripts/stealth_session.py, cf_bypass.py, smart_login.py and the SKILL.md "Open Stealth Page" / "When user asks to login to any website" workflow), ingests their HTML/cookies/localStorage, and makes decisions (switching headed/headless, form-filling, CAPTCHA injection, session saving) based on that untrusted third-party content—allowing indirect prompt-injection-like influence on agent actions.

MEDIUM W013: Attempt to modify system services in skill instructions.

  • Attempt to modify system services in skill instructions detected (high risk: 1.00). The skill explicitly instructs bypassing security mechanisms (e.g., launching browsers with --no-sandbox), running persistent containers, and storing secrets/sessions on the host, which encourages compromising the machine's security state.

Issues (4)

W007
HIGH

Insecure credential handling detected in skill instructions.

E006
CRITICAL

Malicious code pattern detected in skill scripts.

W011
MEDIUM

Third-party content exposure detected (indirect prompt injection risk).

W013
MEDIUM

Attempt to modify system services in skill instructions.

Audit Metadata
Risk Level
CRITICAL
Analyzed
May 18, 2026, 01:03 AM
Issues
4
Security Audit — snyk — stealth-browser