CVE-2026-21727
Low
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.
SeverityLow
CVSS3.3
Exploit probability—
Product
Grafana
PublishedApr 15, 2026
First seenApr 15, 2026
Weakness typeCWE-732CWE-732
How to fix
Update
- grafana grafana11.6.11, 12.0.9, 12.1.6, 12.2.4, 12.3.3 or later
- github.com/grafana/grafana1.9.2-0.20260127141016-e702db6096e0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| grafana grafana | v < 11.6.11, 12.0.0 ≤ v < 12.0.9, 12.1.0 ≤ v < 12.1.6, 12.2.0 ≤ v < 12.2.4, 12.3.0 ≤ v < 12.3.3 | 11.6.11, 12.0.9, 12.1.6, 12.2.4, 12.3.3 |
| github.com/grafana/grafanaGo | v < 1.9.2-0.20260127141016-e702db6096e0, No range specified | 1.9.2-0.20260127141016-e702db6096e0 |
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