{"id":"GHSA-fpg4-jhqr-589c","summary":"SvelteKit  has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimental only)","details":"Some relatively small inputs can cause very large files arrays in `form` handlers. If the SvelteKit application code doesn't check `files.length` or individual files' sizes and performs expensive processing with them, it can result in Denial of Service.\n\nOnly users with `experimental.remoteFunctions: true` who are using the `form` function and are processing the `files` array without validation are vulnerable.","aliases":["CVE-2026-82259"],"modified":"2026-08-29T03:55:36.168482178Z","published":"2026-02-28T02:04:39Z","database_specific":{"cwe_ids":["CWE-770"],"severity":"LOW","github_reviewed":true,"github_reviewed_at":"2026-02-28T02:04:39Z","nvd_published_at":null},"references":[{"type":"WEB","url":"https://github.com/sveltejs/kit/security/advisories/GHSA-fpg4-jhqr-589c"},{"type":"WEB","url":"https://github.com/sveltejs/kit/commit/faba869db3644077169bf5d7c6e41fd5f3d6c65e"},{"type":"PACKAGE","url":"https://github.com/sveltejs/kit"},{"type":"WEB","url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.53.3"}],"affected":[{"package":{"name":"@sveltejs/kit","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/kit"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.49.0"},{"fixed":"2.53.3"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2.53.2","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-fpg4-jhqr-589c/GHSA-fpg4-jhqr-589c.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U"}]}