An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).
{
"cwe_ids": [
"CWE-400"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8609.json",
"cna_assigner": "GRAFANA",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "11.6.0"
},
{
"last_affected": "11.6.14"
},
{
"introduced": "12.2.0"
},
{
"last_affected": "12.2.8"
},
{
"introduced": "12.3.0"
},
{
"last_affected": "12.3.6"
},
{
"introduced": "12.4.0"
},
{
"last_affected": "12.4.3"
},
{
"introduced": "13.0.0"
},
{
"last_affected": "13.0.1"
}
],
"source": "AFFECTED_FIELD"
}
]
}{
"cpe": "cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*",
"extracted_events": [
{
"introduced": "11.6.0"
},
{
"fixed": "11.6.15"
},
{
"introduced": "12.2.0"
},
{
"fixed": "12.2.9"
},
{
"introduced": "12.3.0"
},
{
"fixed": "12.3.7"
},
{
"introduced": "12.4.0"
},
{
"fixed": "12.4.4"
},
{
"introduced": "13.0.0"
},
{
"fixed": "13.0.2"
}
],
"source": "CPE_RANGE"
}