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CVE-2026-56851

Estado: AplazadaAlta (7.5)—

El perfil Nickname puede provocar un panic con un error de slice fuera de límites al transformar una entrada manipulada en un búfer de destino corto.

Traducción automática del texto original de NVD (en inglés).

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector AV:N/PR:N/UI:N indica explotación remota sin autenticación (T1190). CWE-787 (out-of-bounds) causa panic/crash en buffer corto: denegación de servicio (T1499.004, application crash).

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-56851",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-56851",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-10-08T13:48:57.351617Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@golang.org",
      "affectedData": [
        {
          "vendor": "golang.org/x/text",
          "product": "golang.org/x/text/secure/precis",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "0.41.0",
              "versionType": "semver"
            }
          ],
          "packageName": "golang.org/x/text/secure/precis",
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "nickAdditionalMapping.Transform"
            },
            {
              "name": "Profile.Append"
            },
            {
              "name": "Profile.AppendCompareKey"
            },
            {
              "name": "Profile.Bytes"
            },
            {
              "name": "Profile.Compare"
            },
            {
              "name": "Profile.CompareKey"
            },
            {
              "name": "Profile.NewTransformer"
            },
            {
              "name": "Profile.String"
            },
            {
              "name": "Transformer.Bytes"
            },
            {
              "name": "Transformer.String"
            },
            {
              "name": "Transformer.Transform"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-07T18:17:20.903",
  "references": [
    {
      "url": "https://go.dev/cl/793360",
      "source": "security@golang.org"
    },
    {
      "url": "https://go.dev/issue/80112",
      "source": "security@golang.org"
    },
    {
      "url": "https://pkg.go.dev/vuln/GO-2026-6629",
      "source": "security@golang.org"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Nickname profile can panic with an out-of-bounds slice error when transforming crafted input into a short destination buffer."
    }
  ],
  "lastModified": "2026-10-08T21:35:53.890",
  "sourceIdentifier": "security@golang.org"
}