GHSA-h7h7-mm68-gmrc

Svelte affected by XSS in SSR `<option>` element

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-27119

Packages

Ecosystem	Package	Affected	Fixed in
npm	svelte	>= 5.39.3, < 5.51.5	5.51.5

Details

As written in the advisory (Markdown source, shown as plain text).

In certain circumstances, the server-side rendering output of an `<option>` element does not properly escape its content, potentially allowing HTML injection in the SSR output. Client-side rendering is not affected.

References

External links from the advisory. They lead to third-party sites.

https://github.com/sveltejs/svelte/security/advisories/GHSA-h7h7-mm68-gmrc web
https://nvd.nist.gov/vuln/detail/CVE-2026-27119 advisory
https://github.com/sveltejs/svelte package