Netskope Extension Risk

Detail view · rubric v3.6
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Hypothesis - Web & PDF Annotation

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Risk Score
3.85
Risk Level: Low
Recommendation: 🟢 LOW RISK — review
Category Productivity
Installs 200,000
Rating 4.1
Last updated 2026-04-15
Manifest version MV3
CSP present ❌ no
Developer support@hypothes.is
Verified publisher ❌ no
Featured by Google ✅ yes
Privacy policy link
Web Store open ↗

Top Risks

  • Privacy policy fetched but scope_extension=false with data_collection=true and third_party_sharing=true — policy admits broad sharing without scoping to this extension.
  • <all_urls> host_permission paired with scripting enables JS injection on every site visited.
  • No CSP (MV3 default enforced, but absence amplifies code-quality risks from bundled pdfjs Function constructor).
  • Privacy policy does not scope data collection to this extension; third-party sharing admitted.
  • 12 external JS hosts including hyp.is and hypothes.is annotation servers — annotation content transits external infrastructure.

Evidence

  • host_permissions=<all_urls>+scripting manifest Annotation tool requires broad access; justified by category but still high capability surface.
  • privacy_policy_scope_extension=false,third_party_sharing=true crx Policy at hypothes.is/privacy fetched; data_collection+third_party_sharing true but not scoped to extension — triggers +10.0 privacy.
  • function_constructor in pdfjs crx new Function() in pdfjs/build/pdf.js and pdf.worker.js — standard PDF.js eval-support probe, low exploitation risk.
  • no_csp manifest content_security_policy is null; MV3 strict default applies so no network-fetch-eval path, but still noted.
  • is_featured_by_google=true store Google-featured badge reduces reputation risk; not verified publisher.
  • install_url_hijack+uninstall_url_hijack=true,target=null crx Both install and uninstall URL hooks set but targets are null — no active hijack destination detected.
  • no_bad_hosts,no_affiliate,no_monetization api threat_intel shows zero bad-host, affiliate, or monetization hits — clean threat-intel profile.
  • cve_findings_raw=empty crx No CVEs found in bundled libraries; CVE pillar = 0.0.

Permissions Breakdown

  • scripting medium Can inject JS into pages; paired with <all_urls> host permission, covers all sites.
  • storage low Local extension storage only; standard for annotation tools.
  • tabs medium Access to tab URLs and metadata; needed for annotation context.
  • <all_urls> (host_permission) high Grants content-script injection and network access on every site the user visits.

Pillar Scores

Permissions4.50
Reputation3.50
Network3.50
Webstore3.00
Maintenance0.00
Privacy10.00
Code Quality2.50
CVE Exposure0.00

Bookkeeping

Rubric v3.6
Scored at 2026-06-16 05:55
Listing SHA f2c5c32b317d…
Force block — not fired
Score recovered no
Elapsed 25.9s