CVE-2026-82260: Svelte Sveltekit

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remoteFunctions) and form enabled contain a memory exhaustion vulnerability in remote form deserialization. Malformed form data can cause excessive memory allocation, crashing the server process and resulting in denial of service. Fixed in 2.52.2.

Affected products

• Svelte Sveltekit: from 2.49.0, before 2.52.2 (fixed in 2.52.2)

Published 2026-08-28. Last modified 2026-10-08.