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EUVD-2026-2789 · Published Jan 15, 2026
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.
Technologies
Svelte KitSveltejs Kit
Weaknesses
CWE-789CWE-770
CVSS scores
- v4.08.2
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - v3.17.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
MITRE ATT&CK
InferredWhere this vulnerability fits in an attack
Initial Access Impact
References
- https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5
- https://github.com/sveltejs/kit/releases/tag/@sveltejs%2Fadapter-node@5.5.1
- https://github.com/sveltejs/kit/security/advisories/GHSA-j2f3-wq62-6q46
- https://nvd.nist.gov/vuln/detail/CVE-2026-22803
- https://github.com/sveltejs/kit
- https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%402.49.5
Potentially impacted assets
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