CVE-2026-21727: Vulnerability in Grafana Grafana Correlations
--- title: Cross-Tenant Legacy Correlation Disclosure and Deletion draft: false hero: image: /static/img/heros/hero-legal2.svg content: "# Cross-Tenant Legacy Correlation Disclosure and Deletion" date: 2026-01-29 product: Grafana severity: Low cve: CVE-2026-21727 cvss_score: "3.3" cvss_vector: "CVSS:3.3/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N" fixed_versions: - ">=11.6.11 >=12.0.9 >=12.1.6 >=12.2.4" --- 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.
AI Analysis
Technical Summary
This vulnerability arises from a backward compatibility condition in Grafana's Correlations feature where legacy correlation records with org_id = 0 are accessible across tenant boundaries. A user with datasource management privileges can exploit this to access and permanently delete correlation data from other organizations. The flaw affects legacy data created before Grafana 10.2. The vulnerability has a CVSS score of 3.3 (low severity) and is addressed by updates starting from versions 11.6.11, 12.0.9, 12.1.6, and 12.2.4.
Potential Impact
The impact is limited to unauthorized disclosure and deletion of legacy correlation data across organizational boundaries by users with elevated datasource management privileges. There is no indication of availability impact or broader privilege escalation. The vulnerability affects only legacy records created before Grafana 10.2.
Mitigation Recommendations
A fix is available in Grafana versions 11.6.11, 12.0.9, 12.1.6, and 12.2.4. Users should upgrade to one of these versions or later to remediate this vulnerability. No additional mitigation steps are indicated.
CVE-2026-21727: Vulnerability in Grafana Grafana Correlations
Description
--- title: Cross-Tenant Legacy Correlation Disclosure and Deletion draft: false hero: image: /static/img/heros/hero-legal2.svg content: "# Cross-Tenant Legacy Correlation Disclosure and Deletion" date: 2026-01-29 product: Grafana severity: Low cve: CVE-2026-21727 cvss_score: "3.3" cvss_vector: "CVSS:3.3/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N" fixed_versions: - ">=11.6.11 >=12.0.9 >=12.1.6 >=12.2.4" --- 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.
CVSS v3.1
Score 3.3low
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability arises from a backward compatibility condition in Grafana's Correlations feature where legacy correlation records with org_id = 0 are accessible across tenant boundaries. A user with datasource management privileges can exploit this to access and permanently delete correlation data from other organizations. The flaw affects legacy data created before Grafana 10.2. The vulnerability has a CVSS score of 3.3 (low severity) and is addressed by updates starting from versions 11.6.11, 12.0.9, 12.1.6, and 12.2.4.
Potential Impact
The impact is limited to unauthorized disclosure and deletion of legacy correlation data across organizational boundaries by users with elevated datasource management privileges. There is no indication of availability impact or broader privilege escalation. The vulnerability affects only legacy records created before Grafana 10.2.
Mitigation Recommendations
A fix is available in Grafana versions 11.6.11, 12.0.9, 12.1.6, and 12.2.4. Users should upgrade to one of these versions or later to remediate this vulnerability. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GRAFANA
- Date Reserved
- 2026-01-05T09:26:06.215Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 69dfe7b682d89c981f913c3f
Added to database: 4/15/2026, 7:32:06 PM
Last enriched: 5/14/2026, 2:15:22 AM
Last updated: 5/31/2026, 1:55:30 AM
Views: 55
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