Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct identities could collide on one key. An authenticated user who shapes their own attributes to collide with a higher-privileged user's, while that user's cache entry is live, is authenticated as that user, up to Administrator (authentication bypass by spoofing).
{
"cna_assigner": "GRAFANA",
"cwe_ids": [
"CWE-1023",
"CWE-290",
"CWE-863"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/14xxx/CVE-2026-14199.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "11.0.0"
},
{
"last_affected": "11.6.17"
},
{
"introduced": "12.0.0"
},
{
"last_affected": "12.2.11"
},
{
"introduced": "12.3.0"
},
{
"last_affected": "12.3.11"
},
{
"introduced": "12.4.0"
},
{
"last_affected": "12.4.9"
},
{
"introduced": "13.0.0"
},
{
"last_affected": "13.0.7"
},
{
"introduced": "13.1.0"
},
{
"last_affected": "13.1.4"
},
{
"introduced": "13.2.0"
},
{
"last_affected": "13.2.0"
},
{
"introduced": "11.0.0"
},
{
"last_affected": "11.6.17"
},
{
"introduced": "12.0.0"
},
{
"last_affected": "12.2.11"
},
{
"introduced": "12.3.0"
},
{
"last_affected": "12.3.11"
},
{
"introduced": "12.4.0"
},
{
"last_affected": "12.4.9"
},
{
"introduced": "13.0.0"
},
{
"last_affected": "13.0.7"
},
{
"introduced": "13.1.0"
},
{
"last_affected": "13.1.4"
},
{
"introduced": "13.2.0"
},
{
"last_affected": "13.2.0"
}
],
"source": "AFFECTED_FIELD"
}
]
}{
"cpe": "cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "11.0.0"
},
{
"introduced": "12.4.10"
},
{
"fixed": "13.0.0"
},
{
"introduced": "13.0.8"
},
{
"fixed": "13.1.0"
},
{
"introduced": "13.1.5"
},
{
"fixed": "13.2.0"
}
],
"source": "CPE_RANGE"
}