hallmark
Warn
Audited by Snyk on Aug 22, 2026
Risk Level: MEDIUM
Full Analysis
MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).
- Third-party content exposure detected (medium risk: 0.30). The skill’s
hallmark study <screenshot | URL>verb accepts user-supplied URLs and, in URL mode, performs WebFetch and parses the returned HTML/CSS as runtime-readable text to extract “design facts,” creating an indirect prompt-injection surface from outsider-authored page content.
MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).
- Potentially malicious external URL detected (high risk: 0.80). The skill's
studyverb explicitly WebFetches user-supplied URLs at runtime and parses the returned HTML/CSS to extract "DNA" that the agent then uses to generate prompts/output (example source-url: https://example.com/), so external URLs supplied at runtime can directly control the agent's outputs.
Issues (2)
W011
MEDIUMThird-party content exposure detected (indirect prompt injection risk).
W012
MEDIUMUnverifiable external dependency detected (runtime URL that controls agent).
Audit Metadata