CVE-2026-22803

high

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.

References

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

https://github.com/sveltejs/kit/releases/tag/@sveltejs%[email protected]

https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5

Details

Source: Mitre, NVD

Published: 2026-01-15

Updated: 2026-01-21

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

CVSS v4

Base Score: 8.2

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: High

EPSS

EPSS: 0.0004