Netskope Extension Risk

Detail view · rubric v3.6
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WebZapp

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Risk Score
4.21
Risk Level: Medium
Recommendation: 🟡 MEDIUM RISK — review
Category Productivity
Installs 364
Rating 4.8
Last updated 2026-08-25
Manifest version MV3
CSP present ❌ no
Developer coderlicences@gmail.com
Verified publisher ❌ no
Featured by Google ❌ no
Privacy policy link
Web Store open ↗

Top Risks

  • Google's own privacy policy used — not scoped to this extension; admits data collection and 3rd-party sharing.
  • Full cookie + content-script access to WhatsApp Web exposes session tokens and message data.
  • No CSP declared (MV3) combined with innerHTML sinks and new Function() in contentScript raises XSS risk.
  • Free-webmail dev (gmail) with no developer name and no verified publisher — low accountability.
  • Small install base (364) with high-tier permissions is a tail-attack-surface signal.

Evidence

  • privacy_policy_generic store Policy URL is Google's own account policy; scope_extension=false, data_collection=true, third_party_sharing=true → +10.0 Privacy.
  • cookies+whatsapp_host manifest cookies permission paired with https://web.whatsapp.com/* enables full WhatsApp session hijack.
  • no_csp manifest content_security_policy is null; no CSP on MV3 extension with DOM-XSS sinks present.
  • function_constructor crx new Function() in app.js — dynamic code execution path present.
  • dom_sink_innerhtml_userctrl crx innerHTML sinks in app.js, background.js, contentScript.js without CSP guard.
  • free_webmail_no_devname store Developer email coderlicences@gmail.com; developer_name is empty; no verified publisher.
  • install_perm_anomaly api small_install_high_perm=true: 364 installs with cookies + tabs + declarativeNetRequest.
  • js_external_hosts crx CSP references notiflix.github.io and reactjs.org as external JS hosts without restriction.

Permissions Breakdown

  • storage low Standard local data storage; low risk.
  • unlimitedStorage low Extends storage quota; low risk on its own.
  • tabs medium Can read tab URLs and titles across sessions.
  • cookies high Can read/write cookies on permitted hosts including WhatsApp.
  • notifications low Can display desktop notifications; low standalone risk.
  • declarativeNetRequest medium Can intercept/modify network requests declaratively.
  • https://web.whatsapp.com/* high Full access to WhatsApp Web — can read messages, contacts, session cookies.
  • https://app.coderlicences.com/* medium Sends data to developer backend; exfil surface for license/user data.

Pillar Scores

Permissions5.50
Reputation7.50
Network4.00
Webstore3.50
Maintenance0.00
Privacy10.00
Code Quality5.50
CVE Exposure0.00

Bookkeeping

Rubric v3.6
Scored at 2026-08-31 11:11
Listing SHA a77c433f28ef…
Force block — not fired
Score recovered no
Elapsed