CVE-2022-41717

Estado: ModificadaMedia (5.3)—
An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection.
CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Puntuación base: 5.3
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 5.78%
Percentil entre todas las CVEs puntuadas: 93
Fecha de la puntuación: 6/10/2026
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 (3)

Fedoraproject — Fedora Golang — GO Golang — Http2
CWE

CWE-770
Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-41717",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@golang.org",
      "affectedData": [
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          "vendor": "Go standard library",
          "product": "net/http",
          "versions": [
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              "status": "affected",
              "version": "0",
              "lessThan": "1.18.9",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.19.0-0",
              "lessThan": "1.19.4",
              "versionType": "semver"
            }
          ],
          "packageName": "net/http",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "http2serverConn.canonicalHeader"
            },
            {
              "name": "ListenAndServe"
            },
            {
              "name": "ListenAndServeTLS"
            },
            {
              "name": "Serve"
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            {
              "name": "ServeTLS"
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            {
              "name": "Server.ListenAndServe"
            },
            {
              "name": "Server.ListenAndServeTLS"
            },
            {
              "name": "Server.Serve"
            },
            {
              "name": "Server.ServeTLS"
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            {
              "name": "http2Server.ServeConn"
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        {
          "vendor": "golang.org/x/net",
          "product": "golang.org/x/net/http2",
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "serverConn.canonicalHeader"
            },
            {
              "name": "Server.ServeConn"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-12-08T20:15:10.330",
  "references": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "CWE-770"
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      "value": "An attacker can cause excessive memory growth in a Go server accepting HTTP/2 requests. HTTP/2 server connections contain a cache of HTTP header keys sent by the client. While the total number of entries in this cache is capped, an attacker sending very large keys can cause the server to allocate approximately 64 MiB per open connection."
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  "lastModified": "2026-06-17T05:03:42.153",
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