Summaryinfo

A vulnerability marked as problematic has been reported in Grafana up to 12.1.9/12.2.7/12.3.5/12.4.1. This vulnerability affects unknown code of the component OpenFeature. This manipulation causes denial of service. This vulnerability is tracked as CVE-2026-27880. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Grafana up to 12.1.9/12.2.7/12.3.5/12.4.1. Affected by this vulnerability is an unknown code of the component OpenFeature. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.

The advisory is shared at grafana.com. This vulnerability is known as CVE-2026-27880 since 02/24/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 304086 (Linux Distros Unpatched Vulnerability : CVE-2026-27880), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 12.1.10, 12.2.8, 12.3.6 or 12.4.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (304086). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Grafana

Version

• 12.1.0
• 12.1.1
• 12.1.2
• 12.1.3
• 12.1.4
• 12.1.5
• 12.1.6
• 12.1.7
• 12.1.8
• 12.1.9
• 12.2.0
• 12.2.1
• 12.2.2
• 12.2.3
• 12.2.4
• 12.2.5
• 12.2.6
• 12.2.7
• 12.3.0
• 12.3.1
• 12.3.2
• 12.3.3
• 12.3.4
• 12.3.5
• 12.4.0
• 12.4.1

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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