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.
History

Thu, 15 Jan 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Jan 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title SvelteKit has a memory amplification DoS in Remote Functions binary form deserializer
Weaknesses CWE-789
References
Metrics cvssV4_0

{'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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-01-15T19:06:13.528Z

Reserved: 2026-01-09T22:50:10.287Z

Link: CVE-2026-22803

cve-icon Vulnrichment

Updated: 2026-01-15T19:06:10.859Z

cve-icon NVD

Status : Received

Published: 2026-01-15T19:16:06.120

Modified: 2026-01-15T19:16:06.120

Link: CVE-2026-22803

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.