Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Cute Cow Live Wallpaper [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• New-tab override replaces every new tab with developer-controlled content — high monetization risk.
• Uninstall and install URL hijacks redirect to gameograf.com — traffic monetization pattern.
• innerHTML sinks in popup.js and calendar.js without CSP create DOM-XSS exposure.
• No CSP present on MV3 extension with DOM-sink findings elevates code quality risk.

Evidence

• newtab_override manifest chrome_url_overrides.newtab set to newtab.html — replaces every new tab for all users.
• uninstall_url_hijack crx setUninstallURL points to https://gameograf.com/?utm_source=extension&utm_medium=install.
• install_url_hijack crx onInstalled opens https://gameograf.com/?utm_source=extension&utm_medium=install.
• dom_sink_innerhtml crx Two innerHTML user-controlled sinks found in popup.js and calendar.js; no CSP to mitigate.
• no_csp manifest content_security_policy is null; MV3 default applies but no explicit hardening for DOM sinks.
• privacy_policy api Policy fetched, scoped to extension, discloses data collection, retention, and third-party sharing.
• low_installs_newtab store Only 67 installs with newtab override and search permission — tail attack surface pattern.
• operator_cluster api No sibling extensions detected under same fingerprint; isolated operator.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Cute Cow Live Wallpaper [adware] + malext.io malicious_extension_sentry; score 4.30 -> 6.80 (+2.5 cap 2.5).

Permissions Breakdown

• search medium Allows querying the browser search API; paired with newtab override enables search interception.
• chrome_url_overrides.newtab high Replaces every new tab — high-reach surface for monetization and search hijacking.
• host_permissions: https://api.gameograf.com/* low Scoped to developer's own API domain; limited blast radius.

Pillar Scores

Bookkeeping