CVE-2026-22803 — SvelteKit has a memory amplification DoS in Remote Functions binary form deserializer
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…
Published: 2026-01-15 · CVSS: 8.2 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7