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Vulnerability · Published Sep 2, 2026 · Assigned by GRAFANA

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

High 7.1

In plain English

A high-severity authentication bypass by spoofing in Grafana Enterprise from Grafana. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High
Exploit odds (30 days)0.3%top 74.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

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).

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.24grafana12.4.14-r0ALPINE-CVE-2026-14199

Affected products (as reported)

VendorProductVersions
Grafana Grafana Enterprise 11.0.0 – through 11.6.1712.0.0 – through 12.2.1112.3.0 – through 12.3.1112.4.0 – through 12.4.913.0.0 – through 13.0.713.1.0 – through 13.1.413.2.0 – through 13.2.0
Grafana Grafana OSS 11.0.0 – through 11.6.1712.0.0 – through 12.2.1112.3.0 – through 12.3.1112.4.0 – through 12.4.913.0.0 – through 13.0.713.1.0 – through 13.1.413.2.0 – through 13.2.0

Weakness: CWE-290, CWE-1023, CWE-863 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

References