Cybersecurity researchers have disclosed a vulnerability in Anthropic's Claude Google Chrome Extension that could have been exploited to trigger malicious prompts simply by visiting a web page. The flaw "allowed any website to silently inject prompts into that assistant as if the user wrote them," Koi Security researcher Oren Yomtov said in a report shared with The Hacker News. "No clicks, no
Original source: https://thehackernews.com/2026/03/claude-extension-flaw-enabled-zero.html
Publisher: The Hacker News Mobile
Claude Extension Flaw Enabled Zero-Click XSS Prompt Injection via Any Website
Cybersecurity researchers have disclosed a vulnerability in Anthropic's Claude Google Chrome Extension that could have been exploited to trigger malicious prompts simply by visiting a web page. The flaw "allowed any web...