Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record

{
  "id": "4b9c965ad4e033a2baf3eaba3d93832a28950e5e93838e6fbdec137bbcb6e0e6",
  "url": "https://osv.dev/vulnerability/BIT-grafana-2026-21727",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record",
    "summary": "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. Thanks to Gyu-hyeok Lee (g2h) for reporting this vulnerability.",
    "evidence": "osv:BIT-grafana-2026-21727",
    "products": [
      {
        "name": {
          "value": "grafana",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "11.6.11",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.0.9",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.1.6",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.2.4",
            "evidence": "/affected/0/ranges"
          },
          {
            "value": "12.3.3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "low",
    "structured": {
      "id": "BIT-grafana-2026-21727",
      "aliases": [
        "BIT-grafana-2026-21727",
        "CVE-2026-21727",
        "GHSA-p5x9-j974-rpfp",
        "GO-2026-6664"
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "11.6.11"
                },
                {
                  "introduced": "12.0.0"
                },
                {
                  "fixed": "12.0.9"
                },
                {
                  "introduced": "12.1.0"
                },
                {
                  "fixed": "12.1.6"
                },
                {
                  "introduced": "12.2.0"
                },
                {
                  "fixed": "12.2.4"
                },
                {
                  "introduced": "12.3.0"
                },
                {
                  "fixed": "12.3.3"
                }
              ]
            }
          ],
          "package": {
            "name": "grafana",
            "purl": "pkg:bitnami/grafana",
            "ecosystem": "Bitnami"
          },
          "severity": [
            {
              "type": "CVSS_V3",
              "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"
            }
          ],
          "database_specific": {
            "source": "https://github.com/bitnami/vulndb/tree/main/data/grafana/BIT-grafana-2026-21727.json"
          }
        }
      ],
      "modified": "2026-10-07T17:55:45.029966249Z",
      "provider": "osv",
      "references": [
        "https://grafana.com/security/security-advisories/cve-2026-21727",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-21727"
      ],
      "provider_metadata": {
        "cpes": [
          "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*"
        ],
        "severity": "Low"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-21727",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/database_specific/severity"
  },
  "source_id": "core-osv",
  "document_id": 97125,
  "published_at": "2026-04-21T12:04:43.119+00:00"
}