{"id":"CVE-2024-23641","aliases":["GHSA-g5m6-hxpp-fc49"],"url":"https://o3.security/vulnerability/CVE-2024-23641","summary":"Sending a GET or HEAD request with a body crashes SvelteKit","details":"### Summary\nIn SvelteKit 2 sending a GET request with a body eg `{}` to a SvelteKit app in preview or with `adapter-node` throws `Request with GET/HEAD method cannot have body.` and crashes the app.\n\n```\nnode:internal/deps/undici/undici:6066\n          throw new TypeError(\"Request with GET/HEAD method cannot have body.\");\n                ^\n\nTypeError: Request with GET/HEAD method cannot have body.\n    at new Request (node:internal/deps/undici/undici:6066:17)\n    at getRequest (file:///C:/Users/admin/Desktop/reproduction/node_modules/@sveltejs/kit/src/exports/node/index.js:107:9)\n    at file:///C:/Users/admin/Desktop/reproduction/node_modules/@sveltejs/kit/src/exports/vite/preview/index.js:181:26\n    at call (file:///C:/Users/admin/Desktop/reproduction/node_modules/vite/dist/node/chunks/dep-9A4-l-43.js:44795:7)\n    at next (file:///C:/Users/admin/Desktop/reproduction/node_modules/vite/dist/node/chunks/dep-9A4-l-43.js:44739:5)\n    at file:///C:/Users/admin/Desktop/reproduction/node_modules/@sveltejs/kit/src/exports/vite/preview/index.js:172:6\n    at call (file:///C:/Users/admin/Desktop/reproduction/node_modules/vite/dist/node/chunks/dep-9A4-l-43.js:44795:7)\n    at next (file:///C:/Users/admin/Desktop/reproduction/node_modules/vite/dist/node/chunks/dep-9A4-l-43.js:44739:5)\n    at file:///C:/Users/admin/Desktop/reproduction/node_modules/@sveltejs/kit/src/exports/vite/preview/index.js:211:27\n    at call (file:///C:/Users/admin/Desktop/reproduction/node_modules/vite/dist/node/chunks/dep-9A4-l-43.js:44795:7)\n\nNode.js v20.11.0\n```\n\n`TRACE` requests will also cause the app to crash. Prerendered pages and SvelteKit 1 apps are not affected.\n\n<!--\n### Details\n_Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._\n-->\n### PoC\n<!-- _Complete instructions, including specific configuration details, to reproduce the vulnerability._ -->\nFirst do a fresh install of SvelteKit 2 with the example app. Typescript.\n\n1. `npm run build`\n2. `npm run preview`\n3. Go to http://localhost:4173 (works)\n4. curl -X GET -d \"{}\" http://localhost:4173/bye\n5. Application crashes and http://localhost:4173 is down\n\n### Impact\n<!-- _What kind of vulnerability is it? Who is impacted?_ -->\nDenial of Service for apps using `adapter-node`","published":"2024-01-24T16:56:32.392Z","modified":"2026-10-28T02:30:38.965946201Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"@sveltejs/kit","fixedVersion":"2.4.3"},{"ecosystem":"npm","name":"@sveltejs/adapter-node","fixedVersion":"2.1.2"},{"ecosystem":"npm","name":"@sveltejs/adapter-node","fixedVersion":"3.0.3"},{"ecosystem":"npm","name":"@sveltejs/adapter-node","fixedVersion":"4.0.1"}],"fix":{"url":"https://github.com/sveltejs/kit/commit/af34142631c876a7eb62ff81f71e8a3f90dafee9","label":"sveltejs/kit@af34142"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/23xxx/CVE-2024-23641.json"},{"type":"ADVISORY","url":"https://github.com/sveltejs/kit/security/advisories/GHSA-g5m6-hxpp-fc49"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-23641"},{"type":"FIX","url":"https://github.com/sveltejs/kit/commit/af34142631c876a7eb62ff81f71e8a3f90dafee9"},{"type":"PACKAGE","url":"https://github.com/sveltejs/kit"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:38.965946201Z"}}