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CVE-2022-41721

Estado: ModificadaAlta (7.5)—

A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests.

CVSS

Probabilidad de explotación (EPSS)

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)

Golang — H2C

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2022-41721",
  "cveTags": [],
  "metrics": {
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          "role": "CISA Coordinator",
          "options": [
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              "automatable": "yes"
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          "version": "2.0.3",
          "timestamp": "2025-04-04T14:43:40.503783Z"
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
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          "confidentialityImpact": "NONE"
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  "affected": [
    {
      "source": "security@golang.org",
      "affectedData": [
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          "vendor": "golang.org/x/net",
          "product": "golang.org/x/net/http2/h2c",
          "versions": [
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          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
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              "name": "h2cHandler.ServeHTTP"
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              "name": "h2cUpgrade"
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  ],
  "published": "2023-01-13T23:15:09.250",
  "references": [
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      "url": "https://go.dev/cl/447396",
      "tags": [
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      "source": "security@golang.org"
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      "source": "security@golang.org"
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      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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          "value": "CWE-444"
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  "descriptions": [
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      "lang": "en",
      "value": "A request smuggling attack is possible when using MaxBytesHandler. When using MaxBytesHandler, the body of an HTTP request is not fully consumed. When the server attempts to read HTTP2 frames from the connection, it will instead be reading the body of the HTTP request, which could be attacker-manipulated to represent arbitrary HTTP2 requests."
    },
    {
      "lang": "es",
      "value": "Es posible un ataque de contrabando de solicitudes cuando se utiliza MaxBytesHandler. Cuando se utiliza MaxBytesHandler, el cuerpo de una solicitud HTTP no se consume por completo. Cuando el servidor intenta leer tramas HTTP2 de la conexión, leerá el cuerpo de la solicitud HTTP, que podría ser manipulado por un atacante para representar solicitudes HTTP2 arbitrarias."
    }
  ],
  "lastModified": "2026-06-17T05:03:42.643",
  "configurations": [
    {
      "nodes": [
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}