Bug 2458787 (CVE-2026-21727)

Summary:	CVE-2026-21727 Grafana: Grafana: Cross-tenant data disclosure and deletion via legacy correlation records
Product:	[Other] Security Response	Reporter:	OSIDB Bzimport <bzimport>
Component:	vulnerability	Assignee:	Product Security DevOps Team <prodsec-dev>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	alcohan, amctagga, aoconnor, bniver, flucifre, gmeno, gparvin, groman, jbalunas, lchilton, mbenjamin, mhackett, pahickey, rhaigner, sfeifer, sostapov, vereddy
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	---
Doc Text:	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.	Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	2458957
Bug Blocks:

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.