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CVE-2026-14199

Session takeover via Auth Proxy cache key collision

High7.1EPSS 0.33%
Published
Updated
Reserved
Assigned by
GRAFANA

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).

Scores

CVSS scores of CVE-2026-14199, by who scored it
Scored byCVSSScoreVector
GRAFANACNA (assigner)3.1High7.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
NVDNVD · Analyzed3.1High8.1CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
EPSS (exploitation in 30 days)
0.33% · top 74% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Weakness

Affected products

  • Grafana · Grafana Enterprise

    • affected 11.0.0 – ≤ 11.6.17
    • affected 12.0.0 – ≤ 12.2.11
    • affected 12.3.0 – ≤ 12.3.11
    • affected 12.4.0 – ≤ 12.4.9
    • affected 13.0.0 – ≤ 13.0.7
    • affected 13.1.0 – ≤ 13.1.4
    • affected 13.2.0 – ≤ 13.2.0

  • Grafana · Grafana OSS

    • affected 11.0.0 – ≤ 11.6.17
    • affected 12.0.0 – ≤ 12.2.11
    • affected 12.3.0 – ≤ 12.3.11
    • affected 12.4.0 – ≤ 12.4.9
    • affected 13.0.0 – ≤ 13.0.7
    • affected 13.1.0 – ≤ 13.1.4
    • affected 13.2.0 – ≤ 13.2.0

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .