CVE-2026-27122
CVE-2026-27122 · Svelte SSR does not validate dynamic element tag names in `<svelte:element>`
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 5.1 · Medium · EPSS 0.2% · Fix available
- Published
- Updated
Stack: node