{"cve":"CVE-2026-21727","nvd":{"published":"2026-04-15T20:16:34.290","modified":"2026-10-26T22:10:00.163","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","score":3.3},"cwes":["CWE-732"],"references":["https://grafana.com/security/security-advisories/cve-2026-21727"],"products":["grafana:grafana"],"source":"nvd","synced_at":"2026-10-26T22:26:44.656832877+00:00"},"epss":{"cve":"CVE-2026-21727","score":0.00204,"percentile":0.1028,"date":"2026-10-26"},"kev":null,"osv":[{"id":"GHSA-p5x9-j974-rpfp","url":"https://osv.dev/vulnerability/GHSA-p5x9-j974-rpfp","summary":"Grafana legacy correlations allow cross-tenant disclosure and deletion","modified":"2026-10-07T17:55:45.029966249Z","packages":[{"ecosystem":"Go","name":"github.com/grafana/grafana","purl":"pkg:golang/github.com/grafana/grafana","ranges":["<1.9.2-0.20260127141016-e702db6096e0"],"fixed":["1.9.2-0.20260127141016-e702db6096e0"]}]},{"id":"GO-2026-6664","url":"https://osv.dev/vulnerability/GO-2026-6664","summary":"Grafana legacy correlations allow cross-tenant disclosure and deletion in github.com/grafana/grafana","modified":"2026-10-07T17:55:45.029966249Z","packages":[{"ecosystem":"Go","name":"github.com/grafana/grafana","purl":"pkg:golang/github.com/grafana/grafana","ranges":["all versions"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}