CVE-2026-21727 — Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record

Description (CNA)

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 (CNA)

Vendor / product	Versions
Grafana / Grafana Correlations	affected 10.2.0 before 12.4.0

CWE

No CWE identifiers supplied.

References

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

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.