{"id":"CVE-2026-21727","sourceIdentifier":"security@grafana.com","published":"2026-04-15T20:16:34.290","lastModified":"2026-08-19T19:17:14.593","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"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.\n\nThanks to Gyu-hyeok Lee (g2h) for reporting this vulnerability."}],"affected":[{"source":"security@grafana.com","affectedData":[{"vendor":"Grafana","product":"Grafana Correlations","defaultStatus":"unaffected","versions":[{"version":"10.2.0","lessThan":"12.4.0","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security@grafana.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","baseScore":3.3,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":0.7,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-15T19:56:51.668906Z","id":"CVE-2026-21727","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-732"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*","versionEndExcluding":"11.6.11","matchCriteriaId":"E222AE63-CF86-4357-8D11-A35DCB08CF04"},{"vulnerable":true,"criteria":"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*","versionStartIncluding":"12.0.0","versionEndExcluding":"12.0.9","matchCriteriaId":"303497E8-487F-438B-BD49-0B5494FE1D9C"},{"vulnerable":true,"criteria":"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*","versionStartIncluding":"12.1.0","versionEndExcluding":"12.1.6","matchCriteriaId":"6DFA2773-579E-444B-A8DC-200D8211D231"},{"vulnerable":true,"criteria":"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*","versionStartIncluding":"12.2.0","versionEndExcluding":"12.2.4","matchCriteriaId":"C2BDFDFB-565D-4E2C-B32F-E4B66630CA19"},{"vulnerable":true,"criteria":"cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*","versionStartIncluding":"12.3.0","versionEndExcluding":"12.3.3","matchCriteriaId":"E33CA4BF-8698-4307-87FB-7C6B56287003"}]}]}],"references":[{"url":"https://grafana.com/security/security-advisories/cve-2026-21727","source":"security@grafana.com","tags":["Vendor Advisory"]}]}