{"id":"CVE-2026-82259","revision":"5aa787272ae54bc4b0e556506ce830de","records":[{"revision":"5aa787272ae54bc4b0e556506ce830de","observedAt":"2026-10-25T16:19:10.271+00:00","statement":{"source":"nvd","id":"CVE-2026-82259","aliases":[],"title":"SvelteKit versions from 2.49.0 through 2.53.2 (fixed in 2.53.3) contain a deserialization expansion issue in the experimental form remote function. When an application enables experimental.remoteFunctions and uses the form function to proce…","description":"SvelteKit versions from 2.49.0 through 2.53.2 (fixed in 2.53.3) contain a deserialization expansion issue in the experimental form remote function. When an application enables experimental.remoteFunctions and uses the form function to process the files array without validating files.length or individual file sizes, an attacker can submit relatively small inputs that expand into very large file arrays, leading to expensive processing and denial of service.","state":0,"publishedAt":"2026-08-28T12:16:38.953+00:00","modifiedAt":"2026-10-08T16:17:48.623+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · disclosure@vulncheck.com · Secondary","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1 · disclosure@vulncheck.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/sveltejs/kit/security/advisories/GHSA-fpg4-jhqr-589c","https://www.vulncheck.com/advisories/sveltekit-2.49.0-before-2.53.3-denial-of-service-via-form"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82259","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-502"],"productCriteria":["cpe:2.3:a:svelte:sveltekit:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-08-28T12:16:38.953","lastModified":"2026-10-08T16:17:48.623"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-82259","identifiers":["CVE-2026-82259"]},"retained":false,"historicalAffected":[]}],"coverage":[]}