What is CVE-2026-16491?

CVE-2026-16491 is a medium-severity vulnerability in Grafana Enterprise, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-10-27.

How severe is CVE-2026-16491?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Grafana Enterprise

CVE-2026-16491

Grafana’s RBAC service ignored the requested folder when checking whether a user was a folder administrator for deleted dashboard listings. A user with dashboard permission-management rights on any folder could therefore be treated as an administrator of every folder. This could expose deleted dashboard items from folders where the user lacked administrative access. The fix requires permission on the specified folder, an ancestor, or a wildcard scope.

Vulnerability class: Broken Access Control

Published 2026-10-27.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

grafana.com/security/security-advisories/cve-2026-16491 (vendor-advisory)

Frequently asked questions

What is CVE-2026-16491?: CVE-2026-16491 is a medium-severity vulnerability in Grafana Enterprise, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-10-27.
How severe is CVE-2026-16491?: Medium severity. CVSS v3 base score is 6.5 out of 10.