CVE-2026-82258: Svelte Sveltekit

Medium severity, CVSS 4.8. EPSS: 0.2% chance of exploitation in the next 30 days.

SvelteKit versions from 2.38.0 before 2.60.1 contain a race condition in query.batch that allows concurrent requests from different users to merge under a single request context. Attackers can exploit specific timing conditions to access sensitive data from other users' concurrent requests.

Affected products

• Svelte Sveltekit: from 2.38.0, before 2.60.1 (fixed in 2.60.1)

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