high7.1
CVE-2026-14199
Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected.
Impact
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).
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Grafana | Grafana | before 11.0.0 from 12.4.10 before 13.0.0 from 13.0.8 before 13.1.0 from 13.1.5 before 13.2.0 |