What’s Vulnerable › Vulnerabilities
CVE-2026-21727: Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record
- Severity: low (CVSS 3.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-04-15 · updated 2026-10-26
- Weakness: CWE-732
Description
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.
Affected products
- Grafana: before 11.6.11; from 12.0.0 before 12.0.9; from 12.1.0 before 12.1.6; from 12.2.0 before 12.2.4; from 12.3.0 before 12.3.3 — fixed in 11.6.11, 12.0.9, 12.1.6, 12.2.4, 12.3.3
How to fix
Upgrade to a fixed version: Grafana 11.6.11, 12.0.9, 12.1.6, 12.2.4. Check the vendor advisory for mitigations.
References
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