CVE-2026-82260
Received Received - Intake

Memory Exhaustion in SvelteKit Remote Form Deserialization

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: VulnCheck

Description
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.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-28
AI Q&A
2026-08-28
EPSS Evaluated
N/A
NVD
CVE-2026-82260
EUVD
EUVD-2026-67586

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
sveltejs kit 2.52.2

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

This is a memory exhaustion vulnerability in SvelteKit versions between 2.49.0 and 2.52.1 when experimental remote functions and form are enabled. Malformed form data causes excessive memory allocation, crashing the server and leading to denial of service.

Detection Guidance

Monitor server memory usage and process crashes during form submissions. Check for excessive memory allocation when remote functions are enabled in SvelteKit versions between 2.49.0 and 2.52.1.

Impact Analysis

If exploited, this vulnerability can crash your SvelteKit server by consuming excessive memory, resulting in downtime and service unavailability for users.

Mitigation Strategies

Upgrade SvelteKit to version 2.52.2 or later. Disable experimental.remoteFunctions if not required. Implement rate limiting on form submissions to prevent memory exhaustion.

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