CVE-2026-64785

{
  "id": "CVE-2026-64785",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-23T20:17:21.440",
  "lastModified": "2026-10-24T13:10:00.147",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0."
    },
    {
      "lang": "es",
      "value": "SwiftNIO HTTP/2 carecía de validación en los marcos HEADERS entrantes, lo que permitía que CR, LF, NUL, SP y otros caracteres de control alcanzaran un backend HTTP/1.1 a través del codec de HTTP/2 a HTTP/1 de NIOHTTP2, posibilitando el contrabando de solicitudes HTTP o la división de respuestas. Esta vulnerabilidad se ha solucionado en la versión 1.45.0 de swift-nio-http2."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apple",
          "product": "swift-nio-http2",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.45.0",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
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        "exploitabilityScore": 3.9,
        "impactScore": 1.4
      }
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          "timestamp": "2026-07-24T20:06:09.684879Z",
          "id": "CVE-2026-64785",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
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  },
  "weaknesses": [
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ]
    }
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  "references": [
    {
      "url": "https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory",
        "Patch"
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}