Resource exhaustion in Svelte Sveltekit
CVE-2026-82260
SvelteKit (@sveltejs/kit) versions >=2.49.0 and <=2.52.1 with experimental remote functions (experimental.remoteFunctions) and form enabled contain a memory exhaustion vulnerability in remote form deserialization. Malformed form data can cause excessive memory allocation, crashing the server process and resulting in denial of service. Fixed in 2.52.2.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (40.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 40.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/sveltejs/kit/security/advisories/GHSA-vrhm-gvg7-fpcf (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/sveltekit-before-2.52.2-memory-exhaustion-via-remo… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-82260?
- CVE-2026-82260 is a high-severity vulnerability in Svelte Sveltekit, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-28.
- How severe is CVE-2026-82260?
- High severity. CVSS v3 base score is 7.5 out of 10.