VulnerabilityModified

CVE-2026-21727

A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records.

LOW 3.3EPSS 0.20%

Does this matter?

Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 3.3 LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
EPSS: 0.20% probability · 11th percentile
CISA KEV: Not listed
Weakness: CWE-732
Affected: grafana/grafana
Source: security@grafana.com

References

https://grafana.com/security/security-advisories/cve-2026-21727Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.