CVE-2026-22803

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...

CVE-2025-67647

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

CVE-2026-22803

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...

CVE-2025-67647

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

EUVD-2026-2789

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...

CVE-2026-22803

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...

CVE-2026-22803

CVE-2026-22803 affects SvelteKit. From 2.49.0 to 2.49.4, the experimental form remote function uses a binary format for submitted data, and a crafted payload can trigger unbounded memory allocation, causing a DoS via memory exhaustion. This is fixed in 2.49.5. Impact is memory exhaustion of the s...

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 format containing a representation of submitted form data. A specially-crafted payload can cause the server to allocate...

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 format containing a representation of submitted form data. A specially-crafted payload can cause the server to allocate...

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 format containing a representation of submitted form data. A specially-crafted payload can cause the server to allocate...

CVE-2025-67647 SvelteKit Denial of service and possible SSRF when using prerendering

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

CVE-2025-67647

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

CVE-2025-67647 SvelteKit Denial of service and possible SSRF when using prerendering

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

CVE-2025-67647

CVE-2025-67647 affects SvelteKit. Before 2.49.5, it allows server-side request forgery (SSRF) and DoS under prerender conditions. From 2.44.0 to 2.49.4, a DoS can occur if at least one prerendered route exists (export const prerender = true). From 2.19.0 to 2.49.4, DoS/SSRF can occur when there i...

EUVD-2026-2791

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

CVE-2025-67647 SvelteKit Denial of service and possible SSRF when using prerendering

SvelteKit is a framework for rapidly developing robust, performant web applications using Svelte. Prior to 2.49.5, SvelteKit is vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. From 2.44.0 through 2.49.4, the vulnerability results in a DoS when...

Memory Allocation with Excessive Size Value

Overview @sveltejs/kit is a SvelteKit framework and CLI Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value in the deserializebinaryform function via Remote Form endpoint. An attacker can cause excessive memory allocation by sending a specially crafted...

@sveltejs/kit has memory amplification DoS vulnerability in Remote Functions binary form deserializer (application/x-sveltekit-formdata)

Summary 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. Details When a form is submitted to a remote functi...

Server-side Request Forgery (SSRF)

Overview @sveltejs/kit is a SvelteKit framework and CLI Affected versions of this package are vulnerable to Server-side Request Forgery SSRF due to the improper decoding of protocol headers in resolved path. An attacker can cause the server process to terminate or access internal services by...

SvelteKit is vulnerable to denial of service and possible SSRF when using prerendering

Summary Versions of SvelteKit are vulnerable to a server side request forgery SSRF and denial of service DoS under certain conditions. Details Affected versions from 2.44.0 onwards are vulnerable to DoS if: - your app has at least one prerendered route export const prerender = true Affected...