Critical Security Update for Grafana: Addressing Multiple Vulnerabilities
Summary
ALSA-2026:2920: Important: grafana security update. Affects grafana versions < 10.2.6-18.el9_7. Fixed in 10.2.6-18.el9_7. How to fix ↓
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Background
Grafana is an open-source analytics and monitoring platform that enables users to visualize and analyze data from various sources such as Graphite, InfluxDB, and OpenTSDB. It is widely used for creating dynamic dashboards and graphs, making it a crucial tool for data-driven decision-making. However, recent vulnerabilities have been identified that could compromise the security and functionality of Grafana installations.
Vulnerability Detail
The vulnerabilities in Grafana stem from various components, including the Go programming language libraries used within it. Key issues include a Denial of Service (DoS) vulnerability due to excessive resource consumption from crafted certificates (CVE-2025-61729), a permissions scope bypass that allows for cross-dashboard privilege escalation (CVE-2026-21721), and multiple instances of excessive CPU and memory consumption in different libraries (CVE-2025-61728, CVE-2025-61726). These vulnerabilities could lead to service disruptions, unauthorized access, and potential data breaches.
How To Fix
Minimum fixed version
10.2.6-18.el9_7
This is the first release that contains the fix.
sudo dnf update grafanaTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can restrict access to the Grafana dashboards and ensure that only trusted users have permission to view or edit them. This can help mitigate the risk of privilege escalation until the update is applied.
Conclusion
The identified vulnerabilities in Grafana pose significant risks, including potential service disruptions and unauthorized access. It is crucial for users to update their installations to the latest patched versions to safeguard their systems. Utilizing tools like Vulert can help monitor for such vulnerabilities effectively.
See every vulnerability recorded for grafana →
FAQ
Grafana is an open-source platform for monitoring and observability that allows users to visualize data from various sources through customizable dashboards.
The vulnerabilities include Denial of Service due to excessive resource consumption, privilege escalation through dashboard permissions, and excessive CPU and memory usage in certain libraries.
You can use Vulert, which monitors open-source vulnerabilities in your software. By uploading your manifest file, you can check for vulnerabilities without needing to install any software.
Yes, restricting access to Grafana dashboards and ensuring that only trusted users have permissions can help mitigate risks until the vulnerabilities are patched.
If immediate updates are not possible, ensure that access controls are tightened and monitor for any unusual activity in your Grafana instance.
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