# CVE-2026-14199: Session takeover via Auth Proxy cache key collision

> CVE-2026-14199: Session takeover via Auth Proxy cache key collision. CVSS 7.1 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-14199
Last updated: 2026-09-15T18:23:02Z

- Published: 2026-09-02 16:06 UTC · Updated: 2026-09-15 18:23 UTC · Assigner: GRAFANA
- CVSS: 7.1 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
- EPSS: 0.33%, 25th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1023, CWE-290, CWE-863

## 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 vendors and products

- Grafana: Grafana Enterprise
- Grafana: Grafana OSS

## Tracked companies

- [Grafana Cloud](https://rewindex.com/company/grafana-cloud.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-14199)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-14199)
- [https://grafana.com/security/security-advisories/cve-2026-14199](https://grafana.com/security/security-advisories/cve-2026-14199)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-14199 · Markdown: https://rewindex.com/cve/CVE-2026-14199.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-14199 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:48.169Z