CVE-2026-21727

{
  "id": "CVE-2026-21727",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-15T20:16:34.290",
  "lastModified": "2026-10-26T22:10:00.163",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records. Due to a backward compatibility condition allowing org_id = 0 records to be returned across organizations, a user with datasource management privileges could read and permanently delete legacy correlation data belonging to another organization. This issue affects correlations created prior to Grafana 10.2 and is fixed in >=11.6.11, >=12.0.9, >=12.1.6, and >=12.2.4.\n\nThanks to Gyu-hyeok Lee (g2h) for reporting this vulnerability."
    },
    {
      "lang": "es",
      "value": "title: Divulgación y Eliminación de Correlación Heredada Entre Inquilinos\ndraft: false\nhero: image: /static/img/heros/hero-legal2.svg content: “# Divulgación y Eliminación de Correlación Heredada Entre Inquilinos”\ndate: 2026-01-29\nproduct: Grafana\nseverity: Baja\ncve: CVE-2026-21727\ncvss_score: “3.3”\ncvss_vector: “CVSS:3.3/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N”\nfixed_versions: - “mayor o igual que 11.6.11 mayor o igual que 12.0.9 mayor o igual que 12.1.6 mayor o igual que 12.2.4”\n---\nSe encontró una vulnerabilidad de aislamiento entre inquilinos en la característica de Correlaciones de Grafana que afecta a los registros de correlación heredados. Debido a una condición de compatibilidad con versiones anteriores que permite que los registros con org_id = 0 sean devueltos entre organizaciones, un usuario con privilegios de gestión de fuentes de datos podría leer y eliminar permanentemente datos de correlación heredados pertenecientes a otra organización. Este problema afecta a las correlaciones creadas antes de Grafana 10.2 y está solucionado en mayor o igual que 11.6.11, mayor o igual que 12.0.9, mayor o igual que 12.1.6 y mayor o igual que 12.2.4. Gracias a Gyu-hyeok Lee (g2h) por informar de esta vulnerabilidad."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Grafana",
          "product": "Grafana Correlations",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "10.2.0",
              "lessThan": "12.4.0",
              "versionType": "semver",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
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      {
        "source": "[email protected]",
        "type": "Secondary",
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          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 0.7,
        "impactScore": 2.5
      }
    ],
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        "ssvcData": {
          "timestamp": "2026-04-15T19:56:51.668906Z",
          "id": "CVE-2026-21727",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
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              "technicalImpact": "partial"
            }
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          "role": "CISA Coordinator",
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      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-732"
        }
      ]
    }
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  "references": [
    {
      "url": "https://grafana.com/security/security-advisories/cve-2026-21727",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}