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  • Claude Extension Flaw Enabled Zero-Click XSS Prompt Injection via Any Website  – The Hacker News
AttackFeed by Joe Wagner | Claude Extension Flaw Enabled Zero-Click XSS Prompt Injection via Any Website  - The Hacker News

Claude Extension Flaw Enabled Zero-Click XSS Prompt Injection via Any Website  – The Hacker News

Posted on March 26, 2026 By [email protected] (The Hacker News)
Attack Feeds

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  –

Read More  – The Hacker News 

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