Master Chess
cdpiopekjeonfjeocbfebemgocjciepp
Risk Score
2.90
Risk Level:
Low
Recommendation:
🟢 LOW RISK — review
Top Risks
- KNOWN-BAD-HOST: web.archive.org listed in URLHaus malware_download — js_external_hosts contains this domain
- jQuery 3.2.1 bundles 3 medium-severity CVEs (CVE-2019-11358, CVE-2020-11022, CVE-2020-11023); not patched to fixed_in 3.5.0
- Privacy policy on CDN domain (cdn.cloudapi.stream) not scoped to this extension; third_party_sharing=true with no retention disclosure
- Free-webmail developer (nadejdinv@gmail.com) with no verified publisher badge and opaque developer identity
- Sandbox CSP allows unsafe-inline and unsafe-eval; 12 external JS hosts referenced in extension files
Evidence
- known_bad_host crx web.archive.org in js_external_hosts; URLHaus flags 154.216.19.139 as malware_download (elf)
- cve_bundled_lib crx jquery@3.2.1 bundles CVE-2019-11358 (mod), CVE-2020-11022 (mod), CVE-2020-11023 (mod); fixed_in 3.5.0
- privacy_policy_inadequate store Policy at cdn.cloudapi.stream: scope_extension=false, data_collection=false, third_party_sharing=true
- free_webmail_developer store Developer email nadejdinv@gmail.com; no verified publisher; no business domain
- sandbox_csp_unsafe manifest Sandbox CSP includes unsafe-inline and unsafe-eval on script-src
- external_js_hosts crx 12 external hosts referenced including bnjmnt4n.now.sh, createjs.com, stackoverflow.com, web.archive.org
- geo_diversity api JS hosts span 4 countries: CA, NL, US, ZA — meets +1.5 geo-diversity threshold for non-exempt category
- maintenance store Updated April 2026, 4 months ago — within 3-6 month band (+1.5)
CVE Exposures (4)
| 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 |
| web.archive.org | web.archive.org | high | — | [urlhaus/malware_download] URLHaus malware_download: 154.216.19.139,elf |
Pillar Scores
Permissions0.00
Reputation6.50
Network0.00
Webstore4.00
Maintenance1.50
Privacy9.00
Code Quality0.00
CVE Exposure7.00
Bookkeeping
Rubric v3.6
Scored at 2026-08-28 08:42
Listing SHA
3e0d3aaf83f4…
Force block
— not fired
Score recovered
no
Elapsed
—