Grafana Enterprise: Authentication Bypass by Spoofing
CVE-2026-14199 is a high-severity authentication bypass by spoofing vulnerability in Grafana Enterprise from Grafana, with a CVSS 3.1 base score of 8.1 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. Affected Grafana Enterprise versions: 11.0.0 through 11.6.17; 12.0.0 through 12.2.11; 12.3.0 through 12.3.11, and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.33% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update Grafana to 11.0.0 or 13.0.0 or 13.1.0 or 13.2.0, whichever matches your release line, or a later version.
- Read the advisory on grafana.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Grafana | Grafana Enterprise | 11.0.0 through 11.6.17; 12.0.0 through 12.2.11; 12.3.0 through 12.3.11; 12.4.0 through 12.4.9; 13.0.0 through 13.0.7; 13.1.0 through 13.1.4; 13.2.0 and earlier | Not stated |
| Grafana | Grafana OSS | 11.0.0 through 11.6.17; 12.0.0 through 12.2.11; 12.3.0 through 12.3.11; 12.4.0 through 12.4.9; 13.0.0 through 13.0.7; 13.1.0 through 13.1.4; 13.2.0 and earlier | Not stated |
| Grafana | Grafana | before 11.0.0; 12.4.10 up to, but not including, 13.0.0; 13.0.8 up to, but not including, 13.1.0; 13.1.5 up to, but not including, 13.2.0 | 11.0.0, 13.0.0, 13.1.0, 13.2.0 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.1 | High | CNA (grafana.com) |
| CVSS 3.1 | 8.1 | High | NVD |
Official 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).
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
More Authentication Bypass by Spoofing vulnerabilities (CWE-290)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Grafana Enterprise
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 7.1 High severity
- 8.5 High severity
- 7.7 High severity
Recent Authentication Bypass by Spoofing vulnerabilities
- 9.8 Critical severity
- 9.1 Critical severity
- 7.5 High severity
- 8.8 High severity
- 7.5 High severity
- 9.8 Critical severity
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