CVE-2026-21727A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records.
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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
- 3.3 LOW (v3.1, NVD)CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-732
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Modified
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
grafana grafana grafana:grafana | before 11.6.11; from 12.0.0 before 12.0.9; from 12.1.0 before 12.1.6; from 12.2.0 before 12.2.4; from 12.3.0 before 12.3.3 | NVD |
References
- https://grafana.com/security/security-advisories/cve-2026-21727vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.