Netskope Extension Risk

Detail view · rubric v3.6
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Gloss

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Risk Score
5.42
Risk Level: Medium
Recommendation: 🟡 MEDIUM RISK — review
Category AI
Installs 31
Rating 5.0
Last updated 2026-05-23 (3 months ago)
Manifest version MV3
CSP present ✅ yes
Developer venomreborn@gmail.com
Verified publisher ❌ no
Featured by Google ❌ no
Privacy policy link
Web Store open ↗

Top Risks

  • Free-webmail dev (venomreborn@gmail.com), no developer name, no verified identity — high reputation risk.
  • Privacy policy is Google's own account policy, not scoped to this extension; admits data collection and 3rd-party sharing.
  • <all_urls> host permission paired with scripting allows code injection on every site the user visits.
  • AI extension contacts openrouter.ai — page content could be exfiltrated to an LLM proxy; tinyurl.com introduces opaque redirect destination.
  • Two innerHTML DOM-XSS sinks found; could be exploited if attacker controls page content fed into extension.

Evidence

  • free_webmail_developer store Developer email venomreborn@gmail.com, no developer name, no business website — Reputation floor 7.5.
  • privacy_policy_generic_google store Privacy URL is Google account policy (scope_extension=false, data_collection=true, third_party_sharing=true) → Privacy pillar 10.0.
  • host_permissions_all_urls manifest <all_urls> with scripting permission enables full page read/inject on every site.
  • ai_external_host_openrouter crx Extension contacts openrouter.ai — an LLM API aggregator; page content may be sent to third-party AI models.
  • external_host_tinyurl crx tinyurl.com contact introduces opaque redirect; destination unknown and unauditable.
  • dom_xss_sinks crx innerHTML used on user-controlled variables in panel.js and modules/utils.js — DOM-XSS risk.
  • small_install_high_perm api Only 31 installs but carries <all_urls> + scripting — tail attack surface flag triggered.
  • js_external_hosts_count crx 4 distinct external JS hosts: docs.orama.com, openrouter.ai, tinyurl.com, www.google.com.

Permissions Breakdown

  • sidePanel low Adds a side panel UI; low standalone risk.
  • contextMenus low Adds right-click menu entries; no data access.
  • storage low Local extension storage; limited risk.
  • activeTab medium Transient access to current tab on user gesture.
  • scripting medium Can inject scripts into pages; elevated risk paired with <all_urls>.
  • <all_urls> high Broad host access enables scripting/data read across every site visited.

Pillar Scores

Permissions6.00
Reputation7.50
Network4.00
Webstore5.50
Maintenance0.00
Privacy10.00
Code Quality2.50
CVE Exposure0.00

Bookkeeping

Rubric v3.6
Scored at 2026-08-28 09:37
Listing SHA 887c4a0951a7…
Force block — not fired
Score recovered no
Elapsed