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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.

PUBLISHED Reserved 2026-01-09 | Published 2026-01-15 | Updated 2026-01-15 | Assigner GitHub_M




HIGH: 8.2CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Problem types

CWE-789: Memory Allocation with Excessive Size Value

Product status

>= 2.49.0, < 2.49.5
affected

References

github.com/...js/kit/security/advisories/GHSA-j2f3-wq62-6q46

github.com/...ommit/8ed8155215b9a74012fecffb942ad9a793b274e5

github.com/.../kit/releases/tag/@sveltejs/adapter-node@5.5.1

cve.org (CVE-2026-22803)

nvd.nist.gov (CVE-2026-22803)

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