Two very serious security holes have been fixed in Grafana version 12.4.2 This article explores managed grafana azure. . CVE-2026-27876 is the most serious vulnerability, with a CVSS score of 9.1.

Because of this flaw, an attacker can write any files directly to the server's file system. The second vulnerability is a denial-of-service (DoS) flaw with a CVSS Score of 7.5 that affects the OpenFeature validation endpoints. If your organization can't upgrade right away, turning off the sqlExpressions feature toggle will temporarily remove the RCE attack surface. Liad Eliyahu at Miggo Security responsibly reported the vulnerability, which shows how important it is to keep doing thorough external security audits.

Organizations that use managed cloud services can rest easy knowing that Amazon Managed GrafANA and Azure ManagedGrafana environments have already been secured under embargo.

Attackers can crash the Grafanas instance right away by sending requests that are too big. This can cause monitoring services to be down for a long time. Administrators should set up Grafna in a highly available environment so that it can quickly recover from a DoS attack without having to patch it.

To protect against the vulnerability, use a strong reverse proxy like Nginx or Cloudflare to strictly limit the sizes of input payloads. This will effectively stop the memory exhaustion vector. Go to www.grafana.com to learn more about how to get the newest version.