CVE-2026-27901: Svelte

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Svelte performance oriented web framework. Prior to version 5.53.5, the contents of `bind:innerText` and `bind:textContent` on `contenteditable` elements were not properly escaped. This could enable HTML injection and Cross-Site Scripting (XSS) if rendering untrusted data as the binding's initial value on the server. Version 5.53.5 fixes the issue.

Affected products

• Svelte Svelte: before 5.53.5 (fixed in 5.53.5); version 5.53.5 only

Published 2026-02-26. Last modified 2026-06-17.