# CVE-2026-14199

## Summary

- **CVE ID:** CVE-2026-14199
- **Severity:** HIGH
- **CVSS Score:** 7.1 (CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L)
- **CWE:** CWE-290, CWE-1023, CWE-863
- **Published:** Sep 2, 2026
- **Last Modified:** Sep 3, 2026

## 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).

## Affected Products

- Grafana — Grafana Enterprise (11.0.0)
- Grafana — Grafana Enterprise (12.0.0)
- Grafana — Grafana Enterprise (12.3.0)
- Grafana — Grafana Enterprise (12.4.0)
- Grafana — Grafana Enterprise (13.0.0)
- Grafana — Grafana Enterprise (13.1.0)
- Grafana — Grafana Enterprise (13.2.0)
- Grafana — Grafana OSS (11.0.0)
- Grafana — Grafana OSS (12.0.0)
- Grafana — Grafana OSS (12.3.0)
- Grafana — Grafana OSS (12.4.0)
- Grafana — Grafana OSS (13.0.0)
- Grafana — Grafana OSS (13.1.0)
- Grafana — Grafana OSS (13.2.0)

## References

- [CNA](https://grafana.com/security/security-advisories/cve-2026-14199)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.34%
- **EPSS Percentile:** 27.6

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._