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).
Scoring
- Severity
- HIGH
- CVSS base score
- 7.1
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- EPSS probability
- 0.34%
- CWE
- CWE-290, CWE-1023, CWE-863
- Published
- 2026-09-02
- Last modified
- 2026-09-03
Affected products
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana Enterprise
- Grafana Grafana OSS
Weakness type
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