How severe is CVE-2023-4399?

CVE-2023-4399 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.

Is CVE-2023-4399 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-4399?

CVE-2023-4399 affects Grafana. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-4399?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-4399 published?

CVE-2023-4399 was published on 2023-10-17 and last updated on 2026-06-17.

CVE-2023-4399

CVE-2023-4399 is a medium-severity vulnerability in Grafana with a CVSS 3.x base score of 6.6. 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-183.

Key facts

Severity: Medium (CVSS 3.x base score 6.6)
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-183
Affected product: Grafana
Published: 2023-10-17
Last modified: 2026-06-17

Description

Grafana is an open-source platform for monitoring and observability. In Grafana Enterprise, Request security is a deny list that allows admins to configure Grafana in a way so that the instance doesn’t call specific hosts. However, the restriction can be bypassed used punycode encoding of the characters in the request address.

Frequently asked questions

What is CVE-2023-4399?: Grafana is an open-source platform for monitoring and observability. In Grafana Enterprise, Request security is a deny list that allows admins to configure Grafana in a way so that the instance doesn’t call specific hosts. However, the restriction can be bypassed used punycode encoding of the characters in the request address.
How severe is CVE-2023-4399?: CVE-2023-4399 has a CVSS 3.x base score of 6.6, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability low.
Is CVE-2023-4399 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-4399?: CVE-2023-4399 affects Grafana. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-4399?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-4399 published?: CVE-2023-4399 was published on 2023-10-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:grafana:grafana:*:*:*:*:enterprise:*:*:*

More vulnerabilities in Grafana

CVE-2025-41115 — Critical (CVSS 10.0): SCIM provisioning was introduced in Grafana Enterprise and Grafana Cloud in April to improve how organizations manage…
CVE-2024-9264 — Critical (CVSS 9.9): The SQL Expressions experimental feature of Grafana allows for the evaluation of `duckdb` queries containing user…
CVE-2022-39328 — Critical (CVSS 9.8): Grafana is an open-source platform for monitoring and observability. Versions starting with 9.2.0 and less than 9.2.4…
CVE-2022-28660 — Critical (CVSS 9.8): The querier component in Grafana Enterprise Logs 1.1.x through 1.3.x before 1.4.0 does not require authentication when…
CVE-2022-26148 — Critical (CVSS 9.8): An issue was discovered in Grafana through 7.3.4, when integrated with Zabbix. The Zabbix password can be found in the…
CVE-2021-39226 — Critical (CVSS 9.8): Grafana is an open source data visualization platform. In affected versions unauthenticated and authenticated users are…

All CVEs affecting Grafana →

Other CWE-183 vulnerabilities

CVE-2026-3490 — Critical (CVSS 10.0): picklescan before 1.0.4 fails to block pkgutil.resolve_name, allowing attackers to bypass the entire blocklist by…
CVE-2026-54316 — Critical (CVSS 9.1): Claude Code is an agentic coding tool. From 0.2.54 until 2.1.163, because the hostname huggingface.co was pre-approved…
CVE-2026-29514 — High (CVSS 8.8): NetBox versions 4.3.5 through 4.5.4 contain a remote code execution vulnerability in the…
CVE-2026-46391 — High (CVSS 8.7): HAX CMS helps manage microsite universe with PHP or NodeJs backends. Starting in version 9.0.1 and prior to version…
CVE-2025-53762 — High (CVSS 8.7): Permissive list of allowed inputs in Microsoft Purview allows an authorized attacker to elevate privileges over a…
CVE-2026-59802 — High (CVSS 8.2): PasswordPusher before 2.8.1 accepts data URI schemes in URL push payloads due to insufficient validation in the…

Browse all CWE-183 vulnerabilities →