High severity7.5NVD Advisory· Published Aug 28, 2026

CVE-2026-82261

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

SvelteKit/kitllm-fuzzy
Range: >=2.49.0 <=2.52.1

Patches

Vulnerability mechanics

References

github.com/sveltejs/kit/security/advisories/GHSA-88qp-p4qg-rqm6nvd
www.vulncheck.com/advisories/sveltekit-before-2.52.2-cpu-exhaustion-via-remote-form-deserializationnvd

News mentions

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