CVE-2026-14199
High
Description
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).
SeverityHigh
CVSS7.1
Exploit probability—
Product
Grafana
PublishedSep 2, 2026
First seenSep 2, 2026
How to fix
Update
- grafana grafana11.0.0, 13.0.0, 13.1.0, 13.2.0 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| grafana grafana | v < 11.0.0, 12.4.10 ≤ v < 13.0.0, 13.0.8 ≤ v < 13.1.0, 13.1.5 ≤ v < 13.2.0 | 11.0.0, 13.0.0, 13.1.0, 13.2.0 |
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