{"id":"CVE-2026-82256","aliases":["EUVD-2026-67582","GHSA-qcf5-5x72-5253","GHSA-wqjv-9729-c5q2"],"status":"published","title":"SvelteKit before 2.69.1 Denial of Service via Remote Form","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00423,"percentile":0.36856,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-248","CWE-400"],"published":"2026-07-24T15:50:40Z","modified":"2026-10-28T02:30:30Z","fixes":[{"ecosystem":"npm","package":"@sveltejs/kit","fixed_in":["2.69.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@sveltejs/kit","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2.69.0"},{"fixed":"2.69.1"}]}]},{"source":"osv","ecosystem":"npm","package":"@sveltejs/kit","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.69.1"}]}]}],"products":[{"vendor":"svelte","product":"sveltekit"},{"vendor":"sveltejs","product":"kit"}],"references":[{"url":"https://github.com/sveltejs/kit/security/advisories/GHSA-wqjv-9729-c5q2","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/sveltekit-before-2.69.1-denial-of-service-via-remote-form","tags":["third-party-advisory","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82256","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qcf5-5x72-5253"},{"url":"https://github.com/sveltejs/kit/pull/16219","tags":["web"]},{"url":"https://github.com/sveltejs/kit/commit/82b0370c793ac392cee5c2e28f4b8fed09c64582","tags":["web"]},{"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.69.1","tags":["web"]},{"url":"https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@3.0.0-next.7","tags":["web"]},{"url":"https://github.com/advisories/GHSA-wqjv-9729-c5q2"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82256.json","tags":["advisory"]},{"url":"https://github.com/sveltejs/kit","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-82256","title":"SvelteKit before 2.69.1 Denial of Service via Remote Form","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","status":"published","published":"2026-08-28T10:49:40.634Z","modified":"2026-10-08T15:25:29.2Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T13:40:35.004553Z"}],"euvd":[{"id":"EUVD-2026-67582","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","status":"published","published":"2026-08-28T10:49:40Z","modified":"2026-10-08T15:25:29Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:28.564399Z"}],"ghsa":[{"id":"GHSA-qcf5-5x72-5253","title":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing...","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","status":"published","published":"2026-08-28T12:30:29Z","modified":"2026-08-28T12:30:37Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:11:06.970333Z"},{"id":"GHSA-wqjv-9729-c5q2","title":"SvelteKit: Big remote form function payloads can cause Node process to crash","description":"Big remote form function payloads can cause the Node process to crash. Doing this repeatedly can cause DoS.","status":"published","published":"2026-07-24T15:50:40Z","modified":"2026-07-24T15:50:41Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T14:40:52.46233Z"}],"nvd":[{"id":"CVE-2026-82256","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","status":"published","published":"2026-08-28T12:16:38.457Z","modified":"2026-10-08T16:17:48.117Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:12:42.366888Z"}],"osv":[{"id":"CVE-2026-82256","title":"SvelteKit before 2.69.1 Denial of Service via Remote Form","description":"SvelteKit before 2.69.1 fails to properly validate remote form function payload sizes, allowing attackers to crash the Node process by sending large payloads. Repeated exploitation causes denial of service by repeatedly crashing the application process.","status":"published","published":"2026-08-28T10:49:40.634Z","modified":"2026-10-28T02:30:30.819299473Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:45:18.131258Z"},{"id":"GHSA-wqjv-9729-c5q2","title":"SvelteKit: Big remote form function payloads can cause Node process to crash","description":"Big remote form function payloads can cause the Node process to crash. Doing this repeatedly can cause DoS.","status":"published","published":"2026-07-24T15:50:40Z","modified":"2026-08-29T03:55:37.098488579Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-248"],"updated_at":"2026-11-02T15:46:59.131095Z"}]}}