CVE-2026-55850 - Element Web: A malicious homeserver can inject HTML in Element Web using its homepage
Brief
CVE ID : CVE-2026-55850
Published : Aug. 21, 2026, 6:30 p. m.
- 40 minutes ago
Description : Element Web is a Matrix web client built using the Matrix React SDK. Prior to 1.
- 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.
- 22.
Severity: 0.0
- NA
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