CVE-2021-32715

{
  "id": "CVE-2021-32715",
  "cveTags": [],
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          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
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        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
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        "exploitabilityScore": 8.6,
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        "impactScore": 1.4,
        "exploitabilityScore": 1.6
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        "impactScore": 1.4,
        "exploitabilityScore": 3.9
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  "affected": [
    {
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      "affectedData": [
        {
          "vendor": "hyperium",
          "product": "hyper",
          "versions": [
            {
              "status": "affected",
              "version": "< 0.14.10"
            }
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  "published": "2021-07-07T20:15:08.750",
  "references": [
    {
      "url": "https://github.com/hyperium/hyper/security/advisories/GHSA-f3pg-qwvg-p99c",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/rust-lang/rust/pull/28826/commits/123a83326fb95366e94a3be1a74775df4db97739",
      "tags": [
        "Patch",
        "Third Party Advisory"
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    {
      "url": "https://github.com/hyperium/hyper/security/advisories/GHSA-f3pg-qwvg-p99c",
      "tags": [
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      "url": "https://github.com/rust-lang/rust/pull/28826/commits/123a83326fb95366e94a3be1a74775df4db97739",
      "tags": [
        "Patch",
        "Third Party Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
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      "description": [
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          "lang": "en",
          "value": "CWE-444"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "hyper is an HTTP library for rust. hyper's HTTP/1 server code had a flaw that incorrectly parses and accepts requests with a `Content-Length` header with a prefixed plus sign, when it should have been rejected as illegal. This combined with an upstream HTTP proxy that doesn't parse such `Content-Length` headers, but forwards them, can result in \"request smuggling\" or \"desync attacks\". The flaw exists in all prior versions of hyper prior to 0.14.10, if built with `rustc` v1.5.0 or newer. The vulnerability is patched in hyper version 0.14.10. Two workarounds exist: One may reject requests manually that contain a plus sign prefix in the `Content-Length` header or ensure any upstream proxy handles `Content-Length` headers with a plus sign prefix."
    },
    {
      "lang": "es",
      "value": "El código del servidor HTTP/1 de hyper presentaba un fallo que analizaba y aceptaba incorrectamente peticiones con una cabecera \"Content-Length\" con un signo más prefijado, cuando debería haber sido rechazada como ilegal. Esto, combinado con un proxy HTTP ascendente que no analiza dichas cabeceras \"Content-Length\", sino que las reenvía, puede resultar en \"request smuggling\" o \"desync attacks\". El fallo se presenta en todas las versiones de hyper anteriores a 0.14.10, si se construye con \"rustc\" versión v1.5.0 o más reciente. La vulnerabilidad está parcheada en la versión 0.14.10 de hyper. Se presentan dos soluciones: Uno puede rechazar manualmente las peticiones que contengan un prefijo de signo más en la cabecera \"Content-Length\" o asegurarse de que cualquier proxy upstream maneja las cabeceras \"Content-Length\" con un prefijo de signo más"
    }
  ],
  "lastModified": "2026-06-17T03:53:29.050",
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