CVE-2026-21727

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

Published: Apr 15, 2026Updated: Aug 19, 2026 Sources: CVE List NVD BDUCWE-732

3.3LOW

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:HAttack Complexity

High

PR:HPrivileges Required

High

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:LConfidentiality

Low

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-732

Affected Products

Grafana

oss-project·US

Grafana CorrelationsOn-premWeb App

Enterprise Software / itsm-monitoring

grafanaOn-premWeb App

Enterprise Software / itsm-monitoring

ООО «Ред Софт»

commercial·RUaka red soft

РЕД ОСOn-premOS

Operating Systems / linux-distro

Grafana Labs

commercial·US

GrafanaOn-premWeb App

Enterprise Software / itsm-monitoring

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique

Privilege Escalation

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References

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

grafana.com

http://repo.red-soft.ru/redos/8.0/x86_64/updates/

repo.red-soft.ru

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

grafana.com

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