Grafana Dashboard Permissions PrivEsc via API Scope Bypass
CVE-2026-21721 Published on January 27, 2026
Dashboard Permissions Scope Bypass Enables Cross‑Dashboard Privilege Escalation
The dashboard permissions API does not verify the target dashboard scope and only checks the dashboards.permissions:* action. As a result, a user who has permission management rights on one dashboard can read and modify permissions on other dashboards. This is an organizationinternal privilege escalation.
Vulnerability Analysis
CVE-2026-21721 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Types
What is an AuthZ Vulnerability?
The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.
CVE-2026-21721 has been classified to as an AuthZ vulnerability or weakness.
What is an Insecure Direct Object Reference / IDOR Vulnerability?
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
CVE-2026-21721 has been classified to as an Insecure Direct Object Reference / IDOR vulnerability or weakness.
Products Associated with CVE-2026-21721
You can be notified by email with stack.watch whenever vulnerabilities like CVE-2026-21721 are published in these products:
Affected Versions
grafana/grafana:- Version 12.3.0 and below 12.3.1 is affected.
- Version 12.2.0 and below 12.2.3 is affected.
- Version 12.1.0 and below 12.1.5 is affected.
- Version 12.0.0 and below 12.0.8 is affected.
- Version 10.2.0 and below 11.6.9 is affected.
- Version 10.2.0 and below 11.6.9 is affected.
- Version 12.0.0 and below 12.0.8 is affected.
- Version 12.1.0 and below 12.1.5 is affected.
- Version 12.2.0 and below 12.2.3 is affected.
- Version 12.3.0 and below 12.3.1 is affected.
- Version 0:10.2.6-22.el10_1 and below * is unaffected.
- Version 0:10.2.6-20.el10_0 and below * is unaffected.
- Version 0:10.2.6-18.el9_7 and below * is unaffected.
- Version 0:10.2.6-17.el9_6 and below * is unaffected.
- Version 1783578847 and below * is unaffected.
- Version 1774002166 and below * is unaffected.
- Version 1774950654 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.