Netskope Extension Risk

Detail view · rubric v3.6
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NanoGPT Browser Assistant

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Risk Score
5.22
Risk Level: Medium
Recommendation: 🟡 MEDIUM RISK — review
Category AI
Installs 449
Rating 4.8
Last updated 2026-10-21
Manifest version MV3
CSP present ❌ no
Developer support@nano-gpt.com
Verified publisher ✅ yes
Featured by Google ❌ no
Privacy policy link
Web Store open ↗

Top Risks

  • AI extension reads page content on every site (<all_urls>) and sends it to nano-gpt.com
  • Privacy policy admits data collection + third-party sharing without extension scope
  • innerHTML DOM-XSS sink in popup.js with no CSP set
  • Only 449 installs with broad host access — small-install/high-perm anomaly

Evidence

  • broad_host_access crx host_permissions <all_urls> plus content_scripts_matches <all_urls>
  • ai_page_content store AI assistant promising summarize/explain/translate with page context
  • privacy_policy_generic_admits_sharing api Fetched; scope_extension=false, data_collection=true, third_party_sharing=true
  • dom_sink_innerhtml crx popup.js innerHTML from variable; no CSP present
  • verified_publisher store Web Store verified publisher; domain resolves, CT age ~1098 days
  • install_perm_anomaly api 449 installs with high-tier permission set (small_install_high_perm)
  • network_single_host crx Only external host nano-gpt.com; geo diversity 1 country; no bad/monetization hits
  • fresh_maintenance store Updated 0 months ago; MV3; no CVE findings; obfuscation 0.0

Permissions Breakdown

  • activeTab low Temporary access to active tab on user invocation only
  • storage low Local settings/state persistence
  • sidePanel low UI surface declaration, no data access
  • contextMenus low Adds context menu entries; low standalone risk
  • scripting medium Programmatic script injection into pages
  • host:<all_urls> high Broad host access on all sites plus content_scripts <all_urls>

Pillar Scores

Permissions4.50
Reputation1.00
Network2.00
Webstore4.50
Maintenance0.00
Privacy10.00
Code Quality2.00
CVE Exposure0.00

Bookkeeping

Rubric v3.6
Scored at 2026-10-22 11:07
Listing SHA 5267abb7c3ed…
Force block — not fired
Score recovered no
Elapsed —