Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Svelte | Kit | >= 2.49.0, < 2.49.5 |
Related Weaknesses (CWE)
References
- https://github.com/sveltejs/kit/commit/8ed8155215b9a74012fecffb942ad9a793b274e5Patch
- https://github.com/sveltejs/kit/releases/tag/@sveltejs%[email protected]Release Notes
- https://github.com/sveltejs/kit/security/advisories/GHSA-j2f3-wq62-6q46Vendor Advisory
FAQ
What is CVE-2026-22803?
CVE-2026-22803 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 re...
How severe is CVE-2026-22803?
CVE-2026-22803 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-22803?
Check the references section above for vendor advisories and patch information. Affected products include: Svelte Kit.