How severe is CVE-2026-33377?

CVE-2026-33377 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.

Is CVE-2026-33377 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33377?

CVE-2026-33377 primarily affects Grafana. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-33377?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33377 have an EU (EUVD) identifier?

Yes. CVE-2026-33377 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30143.

When was CVE-2026-33377 published?

CVE-2026-33377 was published on 2026-05-13 and last updated on 2026-06-17.

CVE-2026-33377

CVE-2026-33377 is a high-severity vulnerability in Grafana with a CVSS 3.x base score of 7.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: High (CVSS 3.x base score 7.1)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30143
Weakness: CWE-287
Affected product: Grafana
Published: 2026-05-13
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-33377?: 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.
How severe is CVE-2026-33377?: CVE-2026-33377 has a CVSS 3.x base score of 7.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability none.
Is CVE-2026-33377 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33377?: CVE-2026-33377 primarily affects Grafana. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-33377?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33377 have an EU (EUVD) identifier?: Yes. CVE-2026-33377 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30143.
When was CVE-2026-33377 published?: CVE-2026-33377 was published on 2026-05-13 and last updated on 2026-06-17.

References

https://grafana.com/security/security-advisories/cve-2026-33377

Affected products (10)

cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:11.6.14:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:11.6.14:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.2.8:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.2.8:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.3.6:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.3.6:security01:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:12.4.3:-:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:13.0.0:*:*:*:*:*:*:*
cpe:2.3:a:grafana:grafana:13.0.1:-:*:*:*:*:*:*

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Other CWE-287 (Improper Authentication) vulnerabilities

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CVE-2026-42822 — Critical (CVSS 10.0): Improper authentication in Azure Local Disconnected Operations allows an unauthorized attacker to elevate privileges…
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Threat intelligence

Threat-intel indicators referencing this CVE:

167.172.93.203 (ipv4-addr)
139.99.217.78 (ipv4-addr)
102.182.92.126 (ipv4-addr)