Share-A-Cart – Easily Share Shopping Carts
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Risk Score
4.10
Risk Level:
Medium
Recommendation:
🟡 MEDIUM RISK — review
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