Netskope Extension Risk

Detail view · rubric v3.6
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Share-A-Cart – Easily Share Shopping Carts

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Risk Score
4.10
Risk Level: Medium
Recommendation: 🟡 MEDIUM RISK — review
Category Shopping
Installs 100,000
Rating 4.2
Last updated 2026-06-10
Manifest version MV3
CSP present ❌ no
Developer info@share-a-cart.com
Verified publisher ❌ no
Featured by Google ✅ yes
Privacy policy link
Web Store open ↗

Top Risks

  • cookies + broad host_permissions (https://*/*) allows reading session cookies on all visited sites.
  • 5 innerHTML DOM-XSS sinks across core JS files with no CSP; exploitable if cart data is attacker-controlled.
  • 4 sibling extensions under same developer fingerprint expand operator attack surface.
  • Privacy policy admits data collection and third-party sharing but omits retention period.
  • No developer name listed; reduces accountability for broad-host shopping extension.

Evidence

  • broad_host_permissions manifest host_permissions include https://*/* and http://*/* giving access to all sites.
  • cookies_high_perm manifest cookies permission paired with <all_urls> host access; can read/set session cookies everywhere.
  • dom_xss_sinks crx 5 files contain innerHTML assignments from variables; no CSP to mitigate DOM-XSS.
  • no_csp manifest content_security_policy is null; MV3 default CSP applies but no explicit hardening.
  • operator_cluster store 4 sibling extension IDs share same developer email/CSP-host fingerprint.
  • privacy_third_party_sharing store Policy fetched; scope_extension=true but third_party_sharing=true and retention=false.
  • no_developer_name store developer_name field is empty; only email info@share-a-cart.com available.
  • is_featured_by_google store Google Featured badge present; partial trust signal offsetting some reputation risk.

Permissions Breakdown

  • alarms low Scheduled background tasks; minimal standalone risk.
  • clipboardWrite medium Can push data to clipboard; shopping share use-case plausible.
  • storage low Local key-value store; standard.
  • unlimitedStorage low Removes storage quota; low standalone risk.
  • tabs medium Can read tab URLs/titles across all open tabs.
  • cookies high Can read/write cookies on all origins per host_permissions https://*/*.
  • activeTab low Scoped to user-activated tab only; limited blast radius.
  • scripting high Programmatic script injection into pages; paired with broad host access.
  • https://*/* high Broad host permission covering all HTTPS origins.
  • http://*/* high Broad host permission covering all HTTP origins.

Pillar Scores

Permissions5.50
Reputation5.00
Network3.50
Webstore5.50
Maintenance0.00
Privacy2.00
Code Quality5.00
CVE Exposure0.00

Operator Siblings (4)

Other extensions sharing this developer's compound fingerprint:

Scoring History

v3.6 4.10 Medium review 2026-06-16
v3.4-rev 3.32 Low review 2026-06-15

Bookkeeping

Rubric v3.6
Scored at 2026-06-16 07:38
Listing SHA 58510ea5702b…
Force block — not fired
Score recovered no
Elapsed 28.1s