CVE Intelligence

Element-hq Element-web vulnerabilities

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Published CVEs affecting Element-hq Element-web: 1 record(s), with affected versions and fixes.

CVE-2026-55850 Medium · 5.3 CWE-79 Aug 21, 2026
Element Web: A malicious homeserver can inject HTML in Element Web using its homepage
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.