Vulnerability-Lookup

Vulnerability from bitnami_vulndb

Published

2026-04-21 12:04

Modified

2026-08-21 06:12

Summary

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

Details

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.

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "Bitnami",
        "name": "grafana",
        "purl": "pkg:bitnami/grafana"
      },
      "ranges": [
        {
          "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"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "severity": [
        {
          "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N",
          "type": "CVSS_V3"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-21727"
  ],
  "database_specific": {
    "cpes": [
      "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*"
    ],
    "severity": "Low"
  },
  "details": "A cross-tenant isolation vulnerability was found in Grafana\u2019s 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 \u003e=11.6.11, \u003e=12.0.9, \u003e=12.1.6, and \u003e=12.2.4.\n\nThanks to Gyu-hyeok Lee (g2h) for reporting this vulnerability.",
  "id": "BIT-grafana-2026-21727",
  "modified": "2026-08-21T06:12:36.893Z",
  "published": "2026-04-21T12:04:43.119Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2026-21727"
    },
    {
      "type": "WEB",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21727"
    }
  ],
  "schema_version": "1.6.2",
  "summary": "Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record"
}

CVE-2026-21727 (GCVE-0-2026-21727)

Vulnerability from cvelistv5 – Published: 2026-04-15 18:57 – Updated: 2026-08-27 17:22

Title

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

Summary

Severity

3.3 (Low)


                        
                          CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 19:56 UTC

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

GRAFANA mitre root

References

1 reference

URL	Tags
https://grafana.com/security/security-advisories/…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Grafana	Grafana Correlations	Affected: 10.2.0 , < 12.4.0 (semver)

Date Public

2026-04-15 18:52

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-21727",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T19:56:51.668906Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-732",
                "description": "CWE-732 Incorrect Permission Assignment for Critical Resource",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-20T18:59:38.753Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana Correlations",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThan": "12.4.0",
              "status": "affected",
              "version": "10.2.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "datePublic": "2026-04-15T18:52:20.510Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "A cross-tenant isolation vulnerability was found in Grafana\u2019s 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 \u003e=11.6.11, \u003e=12.0.9, \u003e=12.1.6, and \u003e=12.2.4.\n\nThanks to Gyu-hyeok Lee (g2h) for reporting this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 3.3,
            "baseSeverity": "LOW",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-27T17:22:44.594Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-21727"
        }
      ],
      "source": {
        "discovery": "BUG_BOUNTY"
      },
      "title": "Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-21727",
    "datePublished": "2026-04-15T18:57:25.185Z",
    "dateReserved": "2026-01-05T09:26:06.215Z",
    "dateUpdated": "2026-08-27T17:22:44.594Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

Vulnerability from bitnami_vulndb

CVE-2026-21727 (GCVE-0-2026-21727)

Tags

Sightings

Nomenclature