www.itmedia.co.jp/enterprise/articles/2604/01/news014.html
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Claude拡張機能に深刻な脆弱性 閲覧だけでWebブラウザ乗っ取りの恐れ：セキュリティニュースアラート - ITmedia エンタープライズ
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https://www.itmedia.co.jp/enterprise/articles/2604/01/news014.html
About this page
This page reports on a critical vulnerability called "ShadowPrompt" discovered in Claude's Chrome extension. Users can have their browser hijacked without performing any special actions, merely by viewing malicious websites. The AI assistant can be manipulated into executing unauthorized commands, allowing attackers to gain control of the web browser. The vulnerability stems from a combination of design flaws in the extension and XSS weaknesses in external components. Koi Security announced the discovery on March 26, 2026.
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