CVE-2026-27901

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://github.com/sveltejs/svelte/commit/0df5abcae223058ceb95491470372065fb87951d ↗

Additional information

• NVD record
• https://github.com/sveltejs/svelte/commit/0df5abcae223058ceb95491470372065fb87951dPatch
• https://github.com/sveltejs/svelte/security/advisories/GHSA-phwv-c562-gvmhAdvisory
• https://github.com/sveltejs/svelte/releases/tag/svelte%405.53.5