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vuln-cve/data/2026/92xxx/CVE-2026-92081.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
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"cveId": "CVE-2026-92081",
"assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb",
"state": "PUBLISHED",
"assignerShortName": "openjs",
"dateReserved": "2026-09-15T12:55:43.189Z",
"datePublished": "2026-09-16T08:52:49.757Z",
"dateUpdated": "2026-09-16T14:00:59.305Z"
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"value": "fastify is a fast and low-overhead web framework for Node.js. In versions before 5.12.5, when a route registers a response trailer via reply.trailer() and is served over HTTP/2, fastify unconditionally sets the Transfer-Encoding: chunked header, which is forbidden on HTTP/2, so Node.js throws while serializing the response headers. The exception is not caught and becomes an uncaughtException, so a single unauthenticated HTTP/2 request to any route that uses trailers crashes the server process and drops all in-flight requests, and it can be repeated on every restart. The issue is fixed in fastify 5.12.5, and users should upgrade to 5.12.5 or later. As a workaround, avoid registering response trailers with reply.trailer() on routes served over HTTP/2 until upgrading.",
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]
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"status": "affected",
"version": "0",
"lessThan": "5.12.5"
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"status": "unaffected",
"version": "5.12.5"
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"packageURL": "pkg:npm/fastify"
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"url": "https://github.com/fastify/fastify/security/advisories/GHSA-4mh8-r7rc-xpvc"
},
{
"url": "https://cna.openjsf.org/security-advisories.html"
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"lang": "en",
"type": "remediation developer",
"value": "mcollina"
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"lang": "en",
"type": "remediation reviewer",
"value": "UlisesGascon"
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{
"lang": "en",
"type": "reporter",
"value": "zerovulnlabs"
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"title": "fastify vulnerable to Denial of Service via unhandled exception on HTTP/2 trailer responses",
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"baseScore": 5.9,
"baseSeverity": "MEDIUM"
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"value": "GENERAL"
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"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-248",
"lang": "en",
"description": "CWE-248: Uncaught Exception",
"type": "CWE"
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"timestamp": "2026-09-16T14:00:06.966478Z",
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"role": "CISA Coordinator",
"version": "2.0.3"
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"title": "CISA ADP Vulnrichment",
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