Grafana up to 12.4.0 permission

Summaryinfo

A vulnerability classified as critical was found in Grafana up to 12.4.0. The affected element is an unknown function. The manipulation results in permission. This vulnerability is known as CVE-2026-21725. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical has been found in Grafana up to 12.4.0. Affected is an unknown function. The manipulation with an unknown input leads to a permission vulnerability. CWE is classifying the issue as CWE-275. This is going to have an impact on integrity, and availability. CVE summarizes:

A time-of-create-to-time-of-use (TOCTOU) vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so. This requires several very stringent conditions to be met: - The attacker must have admin access to the specific datasource prior to its first deletion. - Upon deletion, all steps within the attack must happen within the next 30 seconds and on the same pod of Grafana. - The attacker must delete the datasource, then someone must recreate it. - The new datasource must not have the attacker as an admin. - The new datasource must have the same UID as the prior datasource. These are randomised by default. - The datasource can now be re-deleted by the attacker. - Once 30 seconds are up, the attack is spent and cannot be repeated. - No datasource with any other UID can be attacked.

The advisory is shared for download at grafana.com. This vulnerability is traded as CVE-2026-21725 since 01/05/2026. The exploitability is told to be difficult. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1222.

The vulnerability scanner Nessus provides a plugin with the ID 300429 (Linux Distros Unpatched Vulnerability : CVE-2026-21725), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 12.4.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (300429). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Grafana

Version

• 12.0
• 12.1
• 12.2
• 12.3
• 12.4.0

License

• open-source

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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