CVE-2026-55850 : 詳細

CVE-2026-55850

2026-08-21
19h17 +00:00
Cross-site Scripting
A03-Injection
2026-10-14
19h10 +00:00
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CVE の説明

Element Web is a Matrix web client built using the Matrix React SDK. Prior to 1.12.22, EmbeddedPage in apps/web/src/components/structures/EmbeddedPage.tsx renders homeserver-supplied homepage content through dangerouslySetInnerHTML without passing it through sanitizedHtmlNode. A malicious homeserver can provide crafted HTML that Element Web renders on the homepage; the content security policy prevents JavaScript but not phishing HTML. This issue is fixed in version 1.12.22.

CVE の情報

関連する弱点

CWE-ID 弱点名 出典
CWE-79 Improper Neutralization of Input During Web Page Generation
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

参考資料