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OpenAdvisories
High · 7.5 CVE-2026-82261 EUVD-2026-67587GHSA-88qp-p4qg-rqm6GHSA-xjpx-7387-jh7h

SvelteKit before 2.52.2 CPU Exhaustion via Remote Form Deserialization

Published Aug 28, 2026 · Updated Oct 8, 2026 · Assigned by VulnCheck

Description

SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions and form enabled contain a CPU exhaustion vulnerability in form deserialization. An attacker can send malformed form data to cause the server to become unresponsive while processing the request, resulting in denial of service. Fixed in 2.52.2.

Affected products

VendorProductAffectedFixed
sveltejs kit 2.49.0 – < 2.52.1 2.52.1

Affected packages

EcosystemPackageAffectedFixedRecord
npm @sveltejs/kit >= 2.49.0, < 2.52.2 2.52.2 GHSA-88qp-p4qg-rqm6

References