CVE-2026-22803

HIGH

7.5

Description

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. From 2.49.0 to 2.49.4, the experimental form remote function uses a binary data format containing a representation of submitted form data. A specially-crafted payload can cause the server to allocate a large amount of memory, causing DoS via memory exhaustion. This vulnerability is fixed in 2.49.5.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/15/2026

Last Modified1/21/2026

Sourcenvd

Honeypot Sightings0

Affected Products

svelte:kit

Weaknesses (CWE)

CWE-789CWE-770

References

https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5(security-advisories@github.com)

https://github.com/sveltejs/kit/releases/tag/@sveltejs%2Fadapter-node@5.5.1(security-advisories@github.com)

https://github.com/sveltejs/kit/security/advisories/GHSA-j2f3-wq62-6q46(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.