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.
{
"cna_assigner": "GRAFANA",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21727.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "10.2.0"
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{
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"source": "AFFECTED_FIELD"
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}{
"cpe": "cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*",
"extracted_events": [
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{
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{
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{
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{
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{
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{
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{
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},
{
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{
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],
"source": "CPE_RANGE"
}