Mahjong Deluxe
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Risk Score
2.78
Risk Level:
Low
Recommendation:
🟢 LOW RISK — review
Top Risks
- Uninstall and install URL hijack flagged — redirects on install/uninstall events to internal/external pages.
- Privacy policy on CDN subdomain (cdn.cloudapi.stream), not scoped to this extension; third-party sharing admitted without data collection disclosure.
- jquery@3.2.1 bundles 3 medium CVEs (XSS) unfixed; library below 3.5.0 threshold.
- Free-webmail developer (gmail), no developer name, no verified publisher — low accountability.
- Sandbox CSP allows unsafe-inline and unsafe-eval, weakening in-extension sandbox security.
Evidence
- install_url_hijack crx onInstalled opens popup/index.html — install_url_hijack flagged true.
- uninstall_url_hijack crx uninstall_url_hijack flagged true; target null but hook present.
- jquery_cve crx jquery@3.2.1 has 3 medium CVEs: CVE-2019-11358, CVE-2020-11022, CVE-2020-11023; fixed_in 3.5.0.
- privacy_policy_unscoped store Policy fetched from cdn.cloudapi.stream; scope_extension=false, data_collection=false, third_party_sharing=true.
- developer_identity store Developer email is free-webmail gmail.com; no developer name; no verified publisher badge.
- sandbox_csp_weak crx Sandbox CSP allows unsafe-inline and unsafe-eval on script-src, weakening sandbox isolation.
- js_external_hosts crx 10 external JS hosts referenced: bnjmnt4n.now.sh, cloudapi.stream, createjs.com, github.com, goo.gl, others.
- no_permissions crx No declared permissions or host_permissions — extension is a self-contained game with no browser API access.
CVE Exposures (3)
| CVE | Library | Severity | Fixed in | Summary |
|---|---|---|---|---|
| CVE-2019-11358 | jquery@3.2.1 | moderate | 3.4.0 | XSS in jQuery as used in Drupal, Backdrop CMS, and other products |
| CVE-2020-11022 | jquery@3.2.1 | moderate | 3.5.0 | Potential XSS vulnerability in jQuery |
| CVE-2020-11023 | jquery@3.2.1 | moderate | 3.5.0 | Potential XSS vulnerability in jQuery |
Pillar Scores
Permissions0.00
Reputation7.00
Network0.00
Webstore6.00
Maintenance1.50
Privacy9.00
Code Quality0.00
CVE Exposure3.00
Bookkeeping
Rubric v3.6
Scored at 2026-08-28 09:00
Listing SHA
5b3b8ade711f…
Force block
— not fired
Score recovered
no
Elapsed
—