What is the CVSS score of CVE-2026-33377?

CVE-2026-33377 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N. EPSS exploitation probability: 0.0%.

Which versions of Grafana OSS are affected by CVE-2026-33377?

Grafana OSS contains a privilege escalation vulnerability (CVE-2026-33377) that permits authenticated dashboard editors to gain administrative permissions on dashboards outside their authority.. A patch is available.

How to fix or mitigate CVE-2026-33377?

Within 24 hours: Identify all Grafana OSS instances in your environment and document their versions. Within 7 days: Apply patch available per vendor advisory to all affected Grafana instances; consult Grafana security advisories for version-specific guidance. Within 30 days: Audit dashboard ownership and Editor role assignments, particularly in multi-tenant deployments, to identify unauthorized dashboard modifications.

Grafana OSS CVE-2026-33377

EUVD-2026-30143 HIGH

Improper Access Control (CWE-284)

2026-05-13 GRAFANA

GHSA-5cv7-h7gr-wjgh

Authentication Bypass Grafana Oss Red Hat

7.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.1 HIGH

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

SUSE

HIGH

qualitative

Red Hat

7.1 MEDIUM

qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Jun 08, 2026 - 10:31 vuln.today

Patch available

May 13, 2026 - 21:02 EUVD

DescriptionCVE.org

An Editor can overwrite a dashboard not owned by them to acquire admin on that specific dashboard. The user must have write access to the dashboard to escalate privilege.

AnalysisAI

Privilege escalation in Grafana OSS allows an authenticated Editor with write access to a dashboard they do not own to overwrite that dashboard and acquire admin permissions on it. The flaw, tracked as CVE-2026-33377 and disclosed by Grafana with patches across multiple maintained branches, has CVSS 7.1 reflecting high integrity impact via low-privileged network access. There is no public exploit identified at time of analysis, and EPSS sits at 0.03% (8th percentile), but the high integrity impact warrants prompt patching for multi-tenant Grafana deployments.

Technical ContextAI

Grafana OSS is the open-source observability and dashboarding platform maintained by Grafana Labs (CPE cpe:2.3:a:grafana:grafana_oss). The issue maps to CWE-284 (Improper Access Control): the dashboard-overwrite code path validates write access to the dashboard object but fails to enforce that the actor is the owner before transferring or granting dashboard-level admin permissions. As a result, an Editor role user - who legitimately has write access to a shared dashboard - can use the overwrite operation to elevate themselves to admin on that specific resource, breaking Grafana's per-dashboard permission model.

RemediationAI

Upgrade to a Grafana-released patched build: 11.6.14+security-04, 12.2.8+security-04, 12.3.6+security-04, 12.4.3+security-02, or 13.0.1+security-01, whichever corresponds to your branch, per the Grafana security advisory at https://grafana.com/security/security-advisories/cve-2026-33377. Until patching is possible, compensating controls include auditing dashboard permissions to ensure Editors do not have write access to dashboards they should not administer (revoke direct or team-inherited write grants on sensitive dashboards), and reviewing recent dashboard updates for unauthorized permission changes - note that tightening Editor write access will block legitimate collaborative editing on shared dashboards, so scope changes to sensitive dashboards only. Monitor dashboard permission and update audit logs for unexpected admin grants on shared dashboards.

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CVE-2012-4681 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2012-1723 CRITICAL POC

9.8

CVE-2012-5076 CRITICAL POC

9.8

CVE-2014-3120 HIGH POC

8.1

CVE-2013-2423 LOW POC

3.7

CVE-2016-3427 CRITICAL

9.8

CVE-2025-12480 CRITICAL POC

9.1

Same technique Authentication Bypass

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CVE-2023-22515 CRITICAL POC

9.8

CVE-2012-4681 CRITICAL POC

9.8

CVE-2013-2465 CRITICAL POC

9.8

CVE-2011-3544 CRITICAL POC

9.8

CVE-2012-1723 CRITICAL POC

9.8

CVE-2017-10271 HIGH POC

7.5

CVE-2015-1427 CRITICAL POC

9.8

CVE-2025-3248 CRITICAL POC

9.8

Vendor StatusVendor

SUSE

Severity: High

Product	Status
SUSE Linux Enterprise Module for Package Hub 15 SP7	Fixed
SUSE Manager Client Tools 15	Fixed
SUSE Manager Client Tools for SLE 15	Fixed
SUSE Multi-Linux Manager Client Tools for SLE 15	Fixed
SUSE Linux Enterprise Module for Package Hub 15 SP4	Fixed

CVE-2026-33377 vulnerability details – vuln.today

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Grafana OSS CVE-2026-33377

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

More in Grafana Oss

Same weakness CWE-284 – Improper Access Control

Same technique Authentication Bypass

Vendor StatusVendor

SUSE

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External POC / Exploit Code