{"id":"CVE-2022-39288","aliases":["EUVD-2022-7008","GHSA-455w-c45v-86rg"],"status":"published","title":"Denial of service in Fastify via Content-Type header","description":"fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.59244,"percentile":0.99124,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-754"],"published":"2022-10-10T00:00:00Z","modified":"2026-10-28T02:31:08Z","fixes":[{"ecosystem":"npm","package":"fastify","fixed_in":["4.8.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"fastify","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0"},{"fixed":"4.8.1"}]}]},{"source":"osv","ecosystem":"npm","package":"fastify","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0"},{"fixed":"4.8.1"}]}]}],"products":[{"vendor":"@clerk","product":"fastify"},{"vendor":"fastify","product":"fastify"}],"references":[{"url":"https://github.com/fastify/fastify/security/advisories/GHSA-455w-c45v-86rg","tags":["x_transferred","Mitigation","Third Party Advisory","advisory","web"]},{"url":"https://github.com/fastify/fastify/commit/fbb07e8dfad74c69cd4cd2211aedab87194618e3","tags":["x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/fastify/fastify/security/policy","tags":["x_transferred","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39288","tags":["advisory"]},{"url":"https://hackerone.com/bugs?report_id=1715536\u0026subject=fastify","tags":["web"]},{"url":"https://github.com/advisories/GHSA-455w-c45v-86rg"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39288.json","tags":["advisory"]},{"url":"https://github.com/fastify/fastify","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-39288","title":"Denial of service in Fastify via Content-Type header","description":"fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.","status":"published","published":"2022-10-10T00:00:00Z","modified":"2025-04-23T16:51:56.095Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:34:39.559326Z"}],"euvd":[{"id":"EUVD-2022-7008","description":"fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.","status":"published","published":"2022-10-10T00:00:00Z","modified":"2025-04-23T16:51:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:11.891054Z"}],"ghsa":[{"id":"GHSA-455w-c45v-86rg","title":"fastify vulnerable to denial of service via malicious Content-Type","description":"### Impact\nAn attacker can send an invalid `Content-Type` header that can cause the application to crash, leading to a possible Denial of Service attack. Only the v4.x line is affected.\n\n(This was updated: upon a close inspection, v3.x is not affected after all).\n\n### Patches\nYes, update to `\u003e v4.8.0`.\n\n### Workarounds\nYou can reject the malicious content types before the body parser enters in action.\n```js\n  const badNames = Object.getOwnPropertyNames({}.__proto__)\n  fastify.addHook('onRequest', async (req, reply) =\u003e {\n    for (const badName of badNames) {\n      if (req.headers['content-type'].indexOf(badName) \u003e -1) {\n        reply.code(415)\n        throw new Error('Content type not supported')\n      }\n    }\n  })\n```\n\n### References\n\nSee the HackerOne report [#1715536](https://hackerone.com/bugs?report_id=1715536\u0026subject=fastify)\n\n### For more information\n[Fastify security policy](https://github.com/fastify/fastify/security/policy)\n","status":"published","published":"2022-10-11T13:45:14Z","modified":"2023-02-02T05:02:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:36:40.500292Z"}],"nvd":[{"id":"CVE-2022-39288","description":"fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.","status":"published","published":"2022-10-10T21:15:11.3Z","modified":"2026-06-17T04:58:04.633Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T14:07:29.026521Z"}],"osv":[{"id":"CVE-2022-39288","title":"Denial of service in Fastify via Content-Type header","description":"fastify is a fast and low overhead web framework, for Node.js. Affected versions of fastify are subject to a denial of service via malicious use of the Content-Type header. An attacker can send an invalid Content-Type header that can cause the application to crash. This issue has been addressed in commit `fbb07e8d` and will be included in release version 4.8.1. Users are advised to upgrade. Users unable to upgrade may manually filter out http content with malicious Content-Type headers.","status":"published","published":"2022-10-10T00:00:00Z","modified":"2026-10-28T02:31:08.164474204Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:44:26.860704Z"},{"id":"GHSA-455w-c45v-86rg","title":"fastify vulnerable to denial of service via malicious Content-Type","description":"### Impact\nAn attacker can send an invalid `Content-Type` header that can cause the application to crash, leading to a possible Denial of Service attack. Only the v4.x line is affected.\n\n(This was updated: upon a close inspection, v3.x is not affected after all).\n\n### Patches\nYes, update to `\u003e v4.8.0`.\n\n### Workarounds\nYou can reject the malicious content types before the body parser enters in action.\n```js\n  const badNames = Object.getOwnPropertyNames({}.__proto__)\n  fastify.addHook('onRequest', async (req, reply) =\u003e {\n    for (const badName of badNames) {\n      if (req.headers['content-type'].indexOf(badName) \u003e -1) {\n        reply.code(415)\n        throw new Error('Content type not supported')\n      }\n    }\n  })\n```\n\n### References\n\nSee the HackerOne report [#1715536](https://hackerone.com/bugs?report_id=1715536\u0026subject=fastify)\n\n### For more information\n[Fastify security policy](https://github.com/fastify/fastify/security/policy)\n","status":"published","published":"2022-10-11T13:45:14Z","modified":"2023-11-08T04:10:17.835364Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-754"],"updated_at":"2026-11-02T15:46:36.434231Z"}]}}