CVE-2026-21727CWE-732

CVE-2026-21727

Low · published April 16, 2026

CVSS v3.1
3.3
EPSS
0%
Percentile
9.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.3 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00204 · 9.9th percentile
Weakness
CWE-732 · Incorrect Permission Assignment for Critical Resource
Published
2026-04-16T00:16Z
Affected products (5)
ProductVersionsFixed in
grafana/grafana< 11.6.1111.6.11
grafana/grafana≥ 12.0.0, < 12.0.912.0.9
grafana/grafana≥ 12.1.0, < 12.1.612.1.6
grafana/grafana≥ 12.2.0, < 12.2.412.2.4
grafana/grafana≥ 12.3.0, < 12.3.312.3.3
References (1)
EPSS history
Timeline
  • 15 APR 18:57Z
    Grafana Correlations: Cross-Tenant Data Disclosure and Permanent Deletion via Legacy org_id=0 Record
    cvelistv5