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Low severity3.3NVD Advisory· Published Apr 15, 2026· Updated Aug 19, 2026

CVE-2026-21727

CVE-2026-21727

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.

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Affected products

3
  • Grafana/Grafana2 versions
    cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*range: <11.6.11
    • (no CPE)range: pre-10.2, fixed in >=11.6.11, >=12.0.9, >=12.1.6, and >=12.2.4
  • osv-coords
    pkg:bitnami/grafana
    Range: < 11.6.11

Patches

Vulnerability mechanics

References

1

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