CVE-2026-45047

{
  "id": "CVE-2026-45047",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-27T18:16:24.150",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "bird-lg-go is a BIRD looking glass in Go. Prior to 1.4.5, the apiHandler (and similarly webHandlerTelegramBot) processes user-provided JSON payloads by directly using json.NewDecoder(r.Body).Decode(&request) without restricting the maximum read size. An unauthenticated remote attacker can stream an extremely large, endless JSON payload (e.g., several Gigabytes of padding) over a single TCP connection. Because Go's JSON decoder attempts to allocate memory for the entire parsed structure, this rapidly exhausts the host's physical RAM or container limits, leading to an unrecoverable fatal error: runtime: out of memory. This vulnerability is fixed in 1.4.5."
    },
    {
      "lang": "es",
      "value": "bird-lg-go es un looking glass BIRD en Go. Antes de la versión 1.4.5, el apiHandler (y de manera similar webHandlerTelegramBot) procesa las cargas útiles JSON proporcionadas por el usuario utilizando directamente json.NewDecoder(r.Body).Decode(&request) sin restringir el tamaño máximo de lectura. Un atacante remoto no autenticado puede transmitir una carga útil JSON extremadamente grande e interminable (por ejemplo, varios Gigabytes de relleno) a través de una única conexión TCP. Debido a que el decodificador JSON de Go intenta asignar memoria para toda la estructura analizada, esto agota rápidamente la RAM física del host o los límites del contenedor, lo que lleva a un error fatal irrecuperable: runtime: out of memory. Esta vulnerabilidad se corrige en la versión 1.4.5."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "xddxdd",
          "product": "bird-lg-go",
          "versions": [
            {
              "version": "< 1.4.5",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "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": "2026-05-27T18:03:03.834690Z",
          "id": "CVE-2026-45047",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/xddxdd/bird-lg-go/security/advisories/GHSA-39qr-rc93-vhqm",
      "source": "[email protected]"
    }
  ]
}