Skip to content
OpenAdvisories
Medium · 5.3 CVE-2026-42573 EUVD-2026-35701GHSA-rcqx-6q8c-2c42

Svelte: XSS via DOM Clobbering of Internal Framework State

Published Jun 9, 2026 · Updated Jul 15, 2026 · Assigned by GitHub_M

Description

Svelte is a performance oriented web framework. Prior to version 5.55.7, Svelte was vulnerable to DOM clobbering of its internal framework state on elements, potentially leading to XSS attacks. This issue has been patched in version 5.55.7.

Affected products

VendorProductAffectedFixed
sveltejs svelte < 5.55.7 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm svelte < 5.55.7 5.55.7 GHSA-rcqx-6q8c-2c42

References