CVE-2026-42285

{
  "id": "CVE-2026-42285",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-07T12:16:18.180",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "GoBGP is an open source Border Gateway Protocol (BGP) implementation in the Go Programming Language. In version 4.4.0, an unauthenticated remote BGP peer can trigger a fatal panic in GoBGP by sending a specially crafted BGP UPDATE message. When the server receives a message with inconsistent attribute lengths, it improperly handles the internal state transition to a \"withdraw\" action, leading to a nil pointer dereference in the AdjRib.Update function. This causes the entire GoBGP process to crash, resulting in a complete loss of service availability. This issue has been patched in version 4.5.0."
    },
    {
      "lang": "es",
      "value": "GoBGP es una implementación de código abierto del Border Gateway Protocol (BGP) en el lenguaje de programación Go. En la versión 4.4.0, un par BGP remoto no autenticado puede desencadenar un pánico fatal en GoBGP al enviar un mensaje BGP UPDATE especialmente diseñado. Cuando el servidor recibe un mensaje con longitudes de atributo inconsistentes, maneja incorrectamente la transición de estado interno a una acción de ’retirada’, lo que lleva a una desreferencia de puntero nulo en la función AdjRib.Update. Esto provoca que todo el proceso de GoBGP falle, lo que resulta en una pérdida completa de la disponibilidad del servicio. Este problema ha sido parcheado en la versión 4.5.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "osrg",
          "product": "gobgp",
          "versions": [
            {
              "version": "= 4.4.0",
              "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": "2026-05-07T13:04:33.585849Z",
          "id": "CVE-2026-42285",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:osrg:gobgp:4.4.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "6EF1E97F-CA8A-45E6-B115-E9BD4EC8B36F"
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  "references": [
    {
      "url": "https://github.com/osrg/gobgp/releases/tag/v4.5.0",
      "source": "[email protected]",
      "tags": [
        "Product",
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Vendor Advisory"
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    {
      "url": "https://github.com/osrg/gobgp/security/advisories/GHSA-p3w2-64xm-833j",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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}