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CVE-2026-21727

3.3 · LOW

A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records.

Published Apr 15, 2026CWE-732EPSS 0.20%

Overview

CVE-2026-21727 is a low-severity vulnerability. It was published on April 15, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgrafana.com/security/security-advisories/cve-2026-21727

How CyberStrike helps

Frequently asked questions

What is CVE-2026-21727?

CVE-2026-21727 is a low-severity vulnerability. It was published on April 15, 2026 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2026-21727?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-21727?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-21727?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-21727 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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