CVE-2026-21727
published 2026-04-15CVE-2026-21727: A cross-tenant isolation vulnerability was found in Grafana’s Correlations feature affecting legacy correlation records. Due to a backward compatibility…
PriorityP412low3.3CVSS 3.1
AVNACHPRHUINSUCLILAN
EPSS
0.20%
9.8th percentile
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | grafana_grafana | >= 0 < 1.9.2-0.20260127141016-e702db6096e0 | 1.9.2-0.20260127141016-e702db6096e0 |
| grafana | grafana | < 11.6.11 | 11.6.11 |
| grafana | grafana | >= 12.0.0 < 12.0.9 | 12.0.9 |
| grafana | grafana | >= 12.1.0 < 12.1.6 | 12.1.6 |
| grafana | grafana | >= 12.2.0 < 12.2.4 | 12.2.4 |
| grafana | grafana | >= 12.3.0 < 12.3.3 | 12.3.3 |
| grafana | grafana_correlations | >= 10.2.0 < 12.4.0 | 12.4.0 |
CVSS provenance
nvdv3.13.3LOWCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N
vendor_redhat3.3LOW
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Red Hat
Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
vendor_redhat·2026-04-15·CVSS 3.3
CVE-2026-21727 [LOW] CWE-653 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
A flaw was found in Grafana. This cross-tenant isolation vulnerability affects legacy correlation records, specifically those created prior to Grafana 10.2. A user with datasource management privileges can exploit a backward compatibility condition, which allows records with an organization ID (org_id) of 0 to be returned across different organizations. This enables the user to read and permanently delete sensitive correlation data belonging to other organizations.
Statement: This Low impact cross-tenant isolation vulnerability in Grafana affects legacy correlation records created prior to Grafana 10.2. A user with datasource management privileges could read and permanently delete correlation data
VulDB
Grafana Correlations up to 12.3.x hero-legal2.svg information disclosure
vuldb·2026-04-16·CVSS 3.3
CVE-2026-21727 [LOW] Grafana Correlations up to 12.3.x hero-legal2.svg information disclosure
A vulnerability has been found in Grafana Correlations up to 12.3.x and classified as problematic. The impacted element is an unknown function of the file /static/img/heros/hero-legal2.svg. The manipulation leads to information disclosure.
This vulnerability is referenced as CVE-2026-21727. Remote exploitation of the attack is possible. No exploit is available.
The affected component should be upgraded.
GHSA
GHSA-p5x9-j974-rpfp: ---
title: Cross-Tenant Legacy Correlation Disclosure and Deletion
draft: false
hero:
image: /static/img/heros/hero-legal2
ghsa_unreviewed·2026-04-15·CVSS 3.3
CVE-2026-21727 [LOW] GHSA-p5x9-j974-rpfp: ---
title: Cross-Tenant Legacy Correlation Disclosure and Deletion
draft: false
hero:
image: /static/img/heros/hero-legal2
---
title: Cross-Tenant Legacy Correlation Disclosure and Deletion
draft: false
hero:
image: /static/img/heros/hero-legal2.svg
content: "# Cross-Tenant Legacy Correlation Disclosure and Deletion"
date: 2026-01-29
product: Grafana
severity: Low
cve: CVE-2026-21727
cvss_score: "3.3"
cvss_vector: "CVSS:3.3/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"
fixed_versions:
- ">=11.6.11 >=12.0.9 >=12.1.6 >=12.2.4"
---
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
GHSA
Grafana legacy correlations allow cross-tenant disclosure and deletion
ghsa·2026-04-15
CVE-2026-21727 [LOW] CWE-732 Grafana legacy correlations allow cross-tenant disclosure and deletion
Grafana legacy correlations allow cross-tenant disclosure and deletion
---
hero:
image: /static/img/heros/hero-legal2.svg
content: "# Cross-Tenant Legacy Correlation Disclosure and Deletion"
date: 2026-01-29
product: Grafana
fixed_versions:
- ">=11.6.11 >=12.0.9 >=12.1.6 >=12.2.4"
---
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
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-21727 grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records [fedora-all]
bugzilla·2026-04-16·CVSS 3.3
CVE-2026-21727 [LOW] CVE-2026-21727 grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records [fedora-all]
CVE-2026-21727 grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Bugzilla
CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
bugzilla·2026-04-15·CVSS 3.3
CVE-2026-21727 [LOW] CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
---
title: Cross-Tenant Legacy Correlation Disclosure and Deletion
draft: false
hero:
image: /static/img/heros/hero-legal2.svg
content: "# Cross-Tenant Legacy Correlation Disclosure and Deletion"
date: 2026-01-29
product: Grafana
severity: Low
cve: CVE-2026-21727
cvss_score: "3.3"
cvss_vector: "CVSS:3.3/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"
fixed_versions:
- ">=11.6.11 >=12.0.9 >=12.1.6 >=12.2.4"
---
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 pe
2026-04-15
Published