{"id":"GHSA-g5m6-hxpp-fc49","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\u003c!--\n### Details\n_Give all details on the vulnerability. Pointing to the incriminated source code is very helpful for the maintainer._\n--\u003e\n### PoC\n\u003c!-- _Complete instructions, including specific configuration details, to reproduce the vulnerability._ --\u003e\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\u003c!-- _What kind of vulnerability is it? Who is impacted?_ --\u003e\nDenial of Service for apps using `adapter-node`","aliases":["CVE-2024-23641"],"modified":"2026-09-10T03:50:00.238557856Z","published":"2024-01-24T14:22:22Z","database_specific":{"cwe_ids":["CWE-20"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2024-01-24T14:22:22Z","nvd_published_at":"2024-01-24T17:15:08Z"},"references":[{"type":"WEB","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":"WEB","url":"https://github.com/sveltejs/kit/commit/af34142631c876a7eb62ff81f71e8a3f90dafee9"},{"type":"PACKAGE","url":"https://github.com/sveltejs/kit"}],"affected":[{"package":{"name":"@sveltejs/kit","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/kit"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.4.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-g5m6-hxpp-fc49/GHSA-g5m6-hxpp-fc49.json"}},{"package":{"name":"@sveltejs/adapter-node","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/adapter-node"},"ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.1.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-g5m6-hxpp-fc49/GHSA-g5m6-hxpp-fc49.json"}},{"package":{"name":"@sveltejs/adapter-node","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/adapter-node"},"ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.0.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-g5m6-hxpp-fc49/GHSA-g5m6-hxpp-fc49.json"}},{"package":{"name":"@sveltejs/adapter-node","ecosystem":"npm","purl":"pkg:npm/%40sveltejs/adapter-node"},"ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.0.1"}]}],"versions":["4.0.0"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/01/GHSA-g5m6-hxpp-fc49/GHSA-g5m6-hxpp-fc49.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}