Improper Authentication in Grafana Enterprise - CVE-2026-14199
Published: September 4, 2026
Vulnerability identifier: #VU146959
CSH Severity: Low
CVSS v4: 7.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-14199
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass authentication and impersonate higher-privileged users.
The vulnerability exists due to improper cache key construction in the Auth Proxy identity cache when generating cache keys from usernames and forwarded identity attributes. A remote user can shape their identity attributes to collide with another user\'s cache key to bypass authentication and impersonate higher-privileged users.
Only self-managed instances with Auth Proxy authentication and identity caching enabled with sync_ttl greater than zero are affected. Exploitation requires a higher-privileged user\'s cache entry to be live.
Affected software
Grafana Enterprise
How to mitigate CVE-2026-14199
Install security update from vendor's website.
Grafana Enterprise - addressed in versions 12.4.10, 13.0.8, 13.1.5, 13.2.1