Bug 2458787 (CVE-2026-21727) - CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
Summary: CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion vi...
Keywords:
Status: NEW
Alias: CVE-2026-21727
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2458957
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-15 20:02 UTC by OSIDB Bzimport
Modified: 2026-04-16 16:15 UTC (History)
17 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

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Description OSIDB Bzimport 2026-04-15 20:02:00 UTC 
---
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 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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