Security Advisory

CVE-2026-27122

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-20 22:28:37

Last updated 2026-02-23 19:23:03

Assigner GitHub_M

State PUBLISHED

Description

svelte performance oriented web framework. Prior to 5.51.5, when using <svelte:element this={tag}> in server-side rendering, the provided tag name is not validated or sanitized before being emitted into the HTML output. If the tag string contains unexpected characters, it can result in HTML injection in the SSR output. Client-side rendering is not affected. This vulnerability is fixed in 5.51.5.

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