Sound Booster – Max Volume & Deep Bass
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Risk Score
4.37
Risk Level:
Medium
Recommendation:
🟡 MEDIUM RISK — review
Top Risks
- Privacy policy is Google's generic policy; not scoped to this extension — admits data collection and 3rd-party sharing.
- Free-webmail developer (gmail) with no verified business; numbered-alias pattern (mildred567guy).
- Five medium-severity jQuery CVEs (XSS) in bundled libs below fixed_in version, no CSP amplifies risk.
- install_url_hijack opens 3rd-party URL on install; external JS host sound-pro.net unverified.
- Content scripts injected on <all_urls> combined with tabCapture creates broad audio/page capture surface.
Evidence
- free_webmail_developer store Developer email mildred567guy@gmail.com — free webmail, numbered alias, no business domain.
- privacy_policy_generic_google store Privacy URL is myaccount.google.com/privacypolicy — Google's own policy, not scoped to this extension.
- install_url_hijack manifest install_url_hijack=true; extension opens 3rd-party URL on install (target undisclosed).
- external_js_host crx js_external_hosts: ['sound-pro.net'] — unverified external domain serves JS.
- cve_jquery_xss crx 5 medium CVEs across jquery@3.4.1 and 3.2.1 (CVE-2020-11022/23, CVE-2019-11358); not fixed.
- no_csp manifest csp_present=false; MV3 default applies but no explicit CSP; amplifies jQuery XSS risk.
- host_permissions_all_urls manifest <all_urls> host permission + content_scripts on all URLs; broad page access.
- is_featured_by_google store Extension carries Google Featured badge, partially offsetting reputation concerns.
CVE Exposures (5)
| CVE | Library | Severity | Fixed in | Summary |
|---|---|---|---|---|
| CVE-2020-11022 | jquery@3.4.1 | moderate | 3.5.0 | Potential XSS vulnerability in jQuery |
| CVE-2020-11023 | jquery@3.4.1 | moderate | 3.5.0 | Potential XSS vulnerability in jQuery |
| 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 |
Permissions Breakdown
- tabCapture high Captures audio/video from active tabs; core to stated function but high-capability.
- offscreen medium Enables background document for audio processing; out-of-view execution surface.
- storage low Local settings persistence; standard low-risk permission.
- <all_urls> (host) high Content scripts injected into every page; broad reach paired with tabCapture.
Pillar Scores
Permissions5.50
Reputation7.50
Network2.00
Webstore5.00
Maintenance0.00
Privacy10.00
Code Quality2.00
CVE Exposure5.25
Bookkeeping
Rubric v3.6
Scored at 2026-08-28 07:47
Listing SHA
ebcb02fe2a05…
Force block
— not fired
Score recovered
no
Elapsed
—