Grafana 10.4.0 Data Source Proxy API improper authorization

Summaryinfo

A vulnerability marked as critical has been reported in Grafana 10.4.0. This affects an unknown function of the component Data Source Proxy API. This manipulation causes improper authorization. This vulnerability is registered as CVE-2025-3454. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in Grafana 10.4.0 and classified as critical. Affected by this vulnerability is an unknown code of the component Data Source Proxy API. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability in Grafana's datasource proxy API allows authorization checks to be bypassed by adding an extra slash character in the URL path. Users with minimal permissions could gain unauthorized read access to GET endpoints in Alertmanager and Prometheus datasources. The issue primarily affects datasources that implement route-specific permissions, including Alertmanager and certain Prometheus-based datasources.

It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2025-3454 since 04/08/2025. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/27/2025). The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 240835 (SUSE SLES15 / openSUSE 15 Security Update : grafana (SUSE-SU-2025:01991-1)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (240835) and EUVD (EUVD-2025-16644). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• Grafana

Version

• 10.4.0

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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