Vulnerability Details CVE-2026-14199
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).
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 27.8%
CVSS Severity
CVSS v3 Score 7.1