CVE-2026-14199
high
Grafana CVSS v3 Base Score
7.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
EPSS Score
0.3%
Exploitation probability in 30 days
Top 73% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Published: September 2, 2026 (4 days ago)
Last Modified: September 3, 2026
Vendor: Grafana
Source: NVD
Vulnerability Report
Generated by CyberWatcher
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).