CVE-2026-97032
Estado: Pendiente de análisisSin puntuar—
Los servidores HTTP/2 podían acabar fallando por modificar inadvertidamente su codificador HPACK de forma concurrente. Esto ocurre porque el servidor modifica el codificador HPACK desde dos goroutines sin sincronización: una usa el codificador para codificar una trama HEADERS como parte de una respuesta enviada a un cliente y la otra modifica el tamaño de la tabla del codificador al gestionar una trama SETTINGS que contiene SETTINGS_HEADER_TABLE_SIZE enviada por un cliente. Un cliente malicioso puede enviar repetidamente una solicitud mientras cambia el tamaño de la tabla de cabeceras para provocar el fallo del servidor.
Traducción automática del texto original de NVD (en inglés).
CVSS
NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.18%
- Percentil entre todas las CVEs puntuadas: 7
- Fecha de la puntuación: 13/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-97032",
"cveTags": [],
"metrics": {},
"affected": [
{
"source": "security@golang.org",
"affectedData": [
{
"vendor": "Go standard library",
"product": "net/http",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "1.26.9",
"versionType": "semver"
}
],
"packageName": "net/http",
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
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{
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{
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{
"name": "Cookie.String"
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{
"name": "Cookie.Valid"
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{
"name": "CrossOriginProtection.AddInsecureBypassPattern"
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{
"name": "CrossOriginProtection.AddTrustedOrigin"
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"name": "CrossOriginProtection.Check"
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{
"name": "Dir.Open"
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"name": "Error"
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{
"name": "Get"
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{
"name": "Handle"
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{
"name": "HandleFunc"
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"name": "HandlerFunc.ServeHTTP"
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"name": "Head"
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"name": "Header.Add"
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"name": "NotFound"
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"name": "ParseCookie"
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"name": "ParseSetCookie"
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"name": "ParseTime"
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"name": "ReadResponse"
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"name": "Redirect"
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{
"name": "Request.AddCookie"
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{
"name": "Request.BasicAuth"
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"name": "Request.Cookies"
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{
"name": "Request.CookiesNamed"
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{
"name": "Request.FormFile"
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"name": "Request.FormValue"
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"name": "Request.MultipartReader"
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{
"name": "Request.ParseForm"
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{
"name": "Request.Referer"
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{
"name": "Server.Serve"
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"lessThan": "1.27.2",
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]
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],
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{
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{
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"name": "dataBuffer.Read"
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{
"name": "duplicatePseudoHeaderError.Error"
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{
"name": "gzipReader.Close"
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{
"name": "gzipReader.Read"
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{
"name": "headerFieldNameError.Error"
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{
"name": "headerFieldValueError.Error"
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{
"name": "netHTTPClientConn.Close"
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{
"name": "netHTTPClientConn.RoundTrip"
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{
"name": "noDialClientConnPool.GetClientConn"
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{
"name": "noDialH2RoundTripper.NewClientConn"
},
{
"name": "noDialH2RoundTripper.RoundTrip"
},
{
"name": "pipe.Read"
},
{
"name": "priorityWriteSchedulerRFC7540.CloseStream"
},
{
"name": "priorityWriteSchedulerRFC7540.OpenStream"
},
{
"name": "priorityWriteSchedulerRFC9218.OpenStream"
},
{
"name": "pseudoHeaderError.Error"
},
{
"name": "requestBody.Close"
},
{
"name": "requestBody.Read"
},
{
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{
"name": "responseWriter.FlushError"
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"name": "responseWriter.Push"
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{
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"name": "responseWriter.SetWriteDeadline"
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"name": "responseWriter.Write"
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{
"name": "responseWriter.WriteHeader"
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{
"name": "responseWriter.WriteString"
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{
"name": "roundRobinWriteScheduler.OpenStream"
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{
"name": "serverConn.CloseConn"
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{
"name": "serverConn.Flush"
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{
"name": "stickyErrWriter.Write"
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{
"name": "transportResponseBody.Close"
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{
"name": "transportResponseBody.Read"
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{
"name": "unencryptedTransport.RoundTrip"
},
{
"name": "writeData.String"
}
]
}
]
}
],
"published": "2026-10-08T23:17:06.213",
"references": [
{
"url": "https://go.dev/cl/847188",
"source": "security@golang.org"
},
{
"url": "https://go.dev/cl/847313",
"source": "security@golang.org"
},
{
"url": "https://go.dev/issue/81867",
"source": "security@golang.org"
},
{
"url": "https://groups.google.com/g/golang-announce/c/U2fTuyDJznI",
"source": "security@golang.org"
},
{
"url": "https://groups.google.com/g/golang-announce/c/ZPwCyRUuGBs",
"source": "security@golang.org"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-6617",
"source": "security@golang.org"
}
],
"vulnStatus": "Awaiting Analysis",
"descriptions": [
{
"lang": "en",
"value": "HTTP/2 servers could end up crashing due to inadvertently modifying its HPACK encoder concurrently. This happens because the server modifies the HPACK encoder from two goroutines without synchronization: one uses the encoder to encode a HEADERS frame as part of a response sent to a client and the other modifies the encoder's table size when handling a SETTINGS frame containing SETTINGS_HEADER_TABLE_SIZE that a client sends. A malicious client can repeatedly send a request while changing the header table size to crash the server."
}
],
"lastModified": "2026-10-09T16:35:35.900",
"sourceIdentifier": "security@golang.org"
}