Browser-Extension

BragJack: One Malicious Extension Hijacks AI Agents Across Five Major Browsers

Researcher Gal Weizman's BragJack proof-of-concept shows how a single malicious extension can hijack the built-in AI agents in Chrome, Edge, Opera Neon, Perplexity Comet, and Claude in Chrome, earning $20K+ in bounties and two CVEs (CVE-2026-0628, CVE-2026-55945).