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).

No CVSS v4.0

Attack Vector Network

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact total

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Grafana Grafana Enterprise unaffected
Version Status Constraints
11.0.0 affected ≤ 11.6.17
12.0.0 affected ≤ 12.2.11
12.3.0 affected ≤ 12.3.11
12.4.0 affected ≤ 12.4.9
13.0.0 affected ≤ 13.0.7
13.1.0 affected ≤ 13.1.4
13.2.0 affected ≤ 13.2.0
Grafana Grafana OSS unaffected
Version Status Constraints
11.0.0 affected ≤ 11.6.17
12.0.0 affected ≤ 12.2.11
12.3.0 affected ≤ 12.3.11
12.4.0 affected ≤ 12.4.9
13.0.0 affected ≤ 13.0.7
13.1.0 affected ≤ 13.1.4
13.2.0 affected ≤ 13.2.0

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://grafana.com/security/security-advisories/cve-2026-14199 cve-icon cve-icon
History

Thu, 03 Sep 2026 07:30:00 +0000

Type Values Removed Values Added
Title CVE-2026-14199 CVE Record Session takeover via Auth Proxy cache key collision

Thu, 03 Sep 2026 05:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Wed, 02 Sep 2026 11:00:00 +0000

Type Values Removed Values Added
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).
Title CVE-2026-14199 CVE Record
Weaknesses CWE-1023
CWE-290
CWE-863
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published:

Updated: 2026-09-03T08:07:46.925Z

Reserved: 2026-06-30T09:16:17.958Z

Link: CVE-2026-14199

cve-icon Vulnrichment

Updated: 2026-09-02T18:21:24.418Z

cve-icon NVD

Status : Received

Published: 2026-09-02T16:17:14.517

Modified: 2026-09-02T19:17:16.377

Link: CVE-2026-14199

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses