{"action":"Upgrade @sveltejs/kit to 2.53.3 or later.","affected":[{"fixed":"2.53.3","introduced":"2.49.0"}],"component":"@sveltejs/kit","cve_ids":["CVE-2026-82259"],"ecosystem":"npm","epss":0.00533,"exploited":false,"fixed_versions":["2.53.3"],"ghsa_id":"GHSA-fpg4-jhqr-589c","id":"tcs_01M5KFNWZR4NG43X4TKRJXE7AY","modified_at":"2026-08-29T03:55:36.168482178Z","published_at":"2026-02-28T02:04:39Z","references":["https://osv.dev/vulnerability/GHSA-fpg4-jhqr-589c","https://github.com/sveltejs/kit/security/advisories/GHSA-fpg4-jhqr-589c","https://github.com/sveltejs/kit/commit/faba869db3644077169bf5d7c6e41fd5f3d6c65e","https://github.com/sveltejs/kit","https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.53.3"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-fpg4-jhqr-589c","url":"https://osv.dev/vulnerability/GHSA-fpg4-jhqr-589c"},{"source":"nvd","source_id":"CVE-2026-82259","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82259"}],"summary":"SvelteKit has deserialization expansion in unvalidated `form` remote function leading to Denial of Service (experimental only)"}