Resource exhaustion in Svelte Kit
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…
EPSS: 0.005 (41.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Svelte Kit
- Sveltejs Kit — versions >= 2.49.0, < 2.49.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-22803?
- CVE-2026-22803 is a high-severity vulnerability in Svelte Kit, classified under CWE-789. CVSS score: 7.5/10. Published 2026-01-15.
- How severe is CVE-2026-22803?
- High severity. CVSS v3 base score is 7.5 out of 10.