CVE-2026-54428

{
  "id": "CVE-2026-54428",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-01T18:16:34.507",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied."
    },
    {
      "lang": "es",
      "value": "Asignación de recursos sin límites ni estrangulamiento en el decodificador HPACK de HTTP/2 en Apache HttpComponents Core (5.4.2 y anteriores, 5.5-beta1 y anteriores) permite a un atacante remoto causar una denegación de servicio mediante el agotamiento de la memoria enviando bloques de cabecera comprimidos de tamaño excesivo antes de que el reconocimiento de SETTINGS de HTTP/2 provoque que se aplique el límite de tamaño de la lista de cabeceras configurado."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache HttpComponents Core",
          "defaultStatus": "unaffected",
          "collectionURL": "https://repo.maven.apache.org/maven2/",
          "packageName": "org.apache.httpcomponents.core5:httpcore5-h2",
          "versions": [
            {
              "version": "5.5-alpha",
              "lessThanOrEqual": "5.5-beta1",
              "versionType": "maven",
              "status": "affected"
            },
            {
              "version": "5.0-alpha",
              "lessThanOrEqual": "5.4.2",
              "versionType": "maven",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-01T18:15:24.114171Z",
          "id": "CVE-2026-54428",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apache:httpcomponents_core:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.0",
              "versionEndIncluding": "5.4.2",
              "matchCriteriaId": "A8EEC5B5-1DF7-46C6-BDF1-682D12E33F04"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:apache:httpcomponents_core:5.5:alpha1:*:*:*:*:*:*",
              "matchCriteriaId": "3A6F1338-5376-4581-AF9B-202B62133A9F"
            },
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              "criteria": "cpe:2.3:a:apache:httpcomponents_core:5.5:beta1:*:*:*:*:*:*",
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  ],
  "references": [
    {
      "url": "https://lists.apache.org/thread/5zjp8vczvxq19pw2rvhs21q446bhl0sd",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/07/01/3",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ]
    }
  ]
}