CVE-2026-61902

{
  "id": "CVE-2026-61902",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-21T12:17:22.140",
  "lastModified": "2026-10-30T14:17:07.203",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Apache bRPC versions before 1.18.0 do not consistently enforce the configured max_body_size limit in non-progressive HTTP/1 and HTTP/2 parsing and in memcache and couchbase response parsing.\n\nA remote unauthenticated peer can cause an affected process to buffer message data beyond the configured limit, which may lead to memory exhaustion and denial of service. \nUsers should upgrade to 1.18.0 or apply the patch from PR  https://github.com/apache/brpc/pull/3382 . The fix rejects oversized buffered HTTP bodies, returns HTTP 413 for HTTP/1 requests, resets oversized HTTP/2 streams, and rejects oversized memcache and couchbase responses from their declared lengths. Progressive HTTP reading remains supported because it uses bounded buffering."
    },
    {
      "lang": "es",
      "value": "Las versiones anteriores a 1.18.0 de Apache bRPC no aplican de forma consistente el límite configurado max_body_size al analizar HTTP/1 y HTTP/2 no progresivos y al analizar respuestas de memcache y couchbase.\\n\\nUn par remoto no autenticado puede provocar que un proceso afectado almacene en búfer datos de mensaje más allá del límite configurado, lo que puede conducir a agotamiento de memoria y denegación de servicio.  \\n\\nLos usuarios deben actualizar a 1.18.0 o aplicar el parche del PR https://github.com/apache/brpc/pull/3382.  \\n\\nLa corrección rechaza cuerpos HTTP almacenados en búfer que exceden el tamaño permitido, devuelve HTTP 413 para solicitudes HTTP/1, restablece flujos HTTP/2 sobredimensionados y rechaza respuestas de memcache y couchbase que superan sus longitudes declaradas.  \\n\\nLa lectura HTTP progresiva sigue siendo compatible porque utiliza un búfer limitado."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache bRPC",
          "defaultStatus": "unaffected",
          "collectionURL": "https://github.com",
          "packageName": "apache/brpc",
          "packageURL": "pkg:github/apache/brpc",
          "versions": [
            {
              "version": "0",
              "lessThan": "1.18.0",
              "versionType": "semver",
              "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": "2026-10-30T14:10:37.719815Z",
          "id": "CVE-2026-61902",
          "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"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://lists.apache.org/thread/2pf15ojj0vr7rtx95677kgtl1mx3gdgb",
      "source": "[email protected]"
    }
  ]
}