Vulnerability · Published Apr 15, 2026 · Assigned by GRAFANA

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

Low 3.3

In plain English

A low-severity incorrect permission assignment in Grafana Correlations from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)3.3Low

Exploit odds (30 days)0.2%top 89.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/grafana/grafana	1.9.2-0.20260127141016-e702db6096e0	GHSA-p5x9-j974-rpfp
Go	github.com/grafana/grafana	no fix listed	GO-2026-6664

Affected products (as reported)

Vendor	Product	Versions
Grafana	Grafana Correlations	10.2.0 – before 12.4.0

Weakness: CWE-732 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

References

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