Netskope Extension Risk

Detail view · rubric v3.6
← Back to catalog

gRPC-Web Developer Tools

cacoibopgjlodngfokahhkphgcohakai
Risk Score
4.14
Risk Level: Medium
Recommendation: 🟡 MEDIUM RISK — review
Category DeveloperTools
Installs 3,000
Rating 3.6
Last updated 2026-03-21 (3 months ago)
Manifest version MV3
CSP present ✅ yes
Developer txitxo37+chromewebstore@gmail.com
Verified publisher ❌ no
Featured by Google ❌ no
Privacy policy link
Web Store open ↗

Top Risks

  • Privacy policy is Google's generic policy (not scoped to this extension) and admits data collection + third-party sharing.
  • Content script injected on <all_urls> gives extension reach into every page the user visits.
  • new Function() constructor found in bundled JS — dynamic code execution risk.
  • innerHTML sink on variable input (DOM-XSS) in content-facing bundle.
  • Developer uses free Gmail address with no verifiable business identity.

Evidence

  • content_scripts broad host manifest content_scripts_matches=["<all_urls>"] — runs on every site despite only needing devtools context.
  • privacy policy generic store Policy URL is Google account policy; scope_extension=false, data_collection=true, third_party_sharing=true.
  • function_constructor code finding crx new Function('return this') in main bundle — dynamic code execution pathway.
  • dom_sink_innerhtml_userctrl crx innerHTML assigned from variable in React-dom; CSP present but sink still exploitable via controlled input.
  • free webmail developer store Developer email txitxo37+chromewebstore@gmail.com; no business domain; unverified identity.
  • js_external_hosts crx External JS hosts: fb.me, reactjs.org — error-boundary CDN references, no bad-host hits.
  • react 16.13.1 detected crx react@16.13.1 detected via license sidecar; version unknown for CVE scan but no CVEs flagged.
  • no verified publisher store verified_publisher=false, is_featured_by_google=false, operator sibling_count=0.

Permissions Breakdown

  • storage low Stores local extension state only; no cross-origin data risk.
  • content_scripts:<all_urls> high Content script runs on every page; broad reach even without explicit host_permissions.

Pillar Scores

Permissions2.30
Reputation6.50
Network0.00
Webstore0.00
Maintenance0.00
Privacy10.00
Code Quality4.50
CVE Exposure0.00

Bookkeeping

Rubric v3.6
Scored at 2026-06-16 07:22
Listing SHA 59a40b359d68…
Force block — not fired
Score recovered no
Elapsed 40.9s