agent-browser
Warn
Audited by Snyk on Jun 23, 2026
Risk Level: MEDIUM
Full Analysis
MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).
- Third-party content exposure detected (high risk: 0.85). At runtime, the skill’s
open/goto/navigatecommands fetch arbitrary web pages (outsider-authored content) andsnapshot --jsoningests the resulting accessibility tree/text into the agent context, enabling indirect prompt injection via page content.
MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).
- Potentially malicious external URL detected (high risk: 0.90). I flag the raw GitHub URL https://raw.githubusercontent.com/vercel-labs/agent-browser/main/skills/agent-browser/SKILL.md because the examples include a curl command that downloads that SKILL.md into a .claude/skills directory at runtime (directly injecting instructions the agent will use); the docs also show git clone https://github.com/vercel-labs/agent-browser.git plus build/install steps which fetch remote code and execute it during setup.
Issues (2)
W011
MEDIUMThird-party content exposure detected (indirect prompt injection risk).
W012
MEDIUMUnverifiable external dependency detected (runtime URL that controls agent).
Audit Metadata