Is CVE-2026-21727 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-21727 being exploited in the wild.

How severe is CVE-2026-21727?

Low severity, with a CVSS score of 3.3, published 15 April 2026.

Which products and versions are affected?

github.com/grafana/grafana (Go) < 1.9.2-0.20260127141016-e702db6096e0, SEMVER:introduced=0, SEMVER:introduced=0,fixed=1.9.2-0.20260127141016-e702db6096e0; Grafana versions before 11.6.11, 12.0.9, 12.1.6, and 12.2.4.

Is there a fix for CVE-2026-21727?

Yes. github.com/grafana/grafana (Go): upgrade to 1.9.2-0.20260127141016-e702db6096e0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-21727 attacked?

It is attacked over the network.

Am I affected by CVE-2026-21727?

Check whether you run github.com/grafana/grafana (Go) or Grafana at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-21727: Grafana legacy correlations allow cross-tenant disclosure and deletion

Q: Is there a fix for CVE-2026-21727?

Yes. github.com/grafana/grafana (Go): upgrade to 1.9.2-0.20260127141016-e702db6096e0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-21727 attacked?

It is attacked over the network.

Q: Am I affected by CVE-2026-21727?

Check whether you run github.com/grafana/grafana (Go) or Grafana at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-21727 · Severity: low · CVSS 3.3 · Published 2026-04-15

Grafana is an observability platform that organizations use to monitor and visualize metrics, logs, and traces. A vulnerability in Grafana's correlations feature allows a user with datasource management privileges to access and delete correlation data belonging to other organizations, compromising confidentiality and data integrity for multi-tenant deployments.

Technologies: github.com/grafana/grafana (Go), Grafana. Vendors: Go, Grafana.

Quick answers

Is CVE-2026-21727 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-21727 being exploited in the wild.
How severe is CVE-2026-21727?: Low severity, with a CVSS score of 3.3, published 15 April 2026.
Which products and versions are affected?: github.com/grafana/grafana (Go) < 1.9.2-0.20260127141016-e702db6096e0, SEMVER:introduced=0, SEMVER:introduced=0,fixed=1.9.2-0.20260127141016-e702db6096e0; Grafana versions before 11.6.11, 12.0.9, 12.1.6, and 12.2.4.
Is there a fix for CVE-2026-21727?: Yes. github.com/grafana/grafana (Go): upgrade to 1.9.2-0.20260127141016-e702db6096e0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-21727 attacked?: It is attacked over the network.
Am I affected by CVE-2026-21727?: Check whether you run github.com/grafana/grafana (Go) or Grafana at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

github.com/grafana/grafana (Go): upgrade to 1.9.2-0.20260127141016-e702db6096e0 or later
```
go get github.com/grafana/grafana@v1.9.2-0.20260127141016-e702db6096e0
```

Technical details

A cross-tenant isolation flaw in Grafana's Correlations feature allows org_id = 0 legacy correlation records created before Grafana 10.2 to be returned and modified across organizational boundaries. An authenticated attacker with datasource management privileges can exploit a backward compatibility condition to read and permanently delete correlation data from other tenants. The vulnerability requires high privilege level and involves network-based access.

Affected products

Grafana Grafana versions before 11.6.11, 12.0.9, 12.1.6, and 12.2.4

Identifiers

CVE-2026-21727
BIT-GRAFANA-2026-21727
GHSA-p5x9-j974-rpfp
GO-2026-6664

Timeline

2026-01-29: disclosed
2026-04-15: advisory

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