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Grafana's datasource proxy API allows authorization checks to be bypassed

Moderate severity GitHub Reviewed Published Jun 2, 2025 to the GitHub Advisory Database • Updated Jun 5, 2025

Package

gomod github.com/grafana/grafana (Go)

Affected versions

>= 0.0.0-20210414170620-dadccdda06e6, < 0.0.0-20250424191517-1f707d16ed5d

Patched versions

0.0.0-20250424191517-1f707d16ed5d

Description

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.

References

Published by the National Vulnerability Database Jun 2, 2025
Published to the GitHub Advisory Database Jun 2, 2025
Reviewed Jun 5, 2025
Last updated Jun 5, 2025

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(0th percentile)

Weaknesses

CVE ID

CVE-2025-3454

GHSA ID

GHSA-9j65-rv5x-4vrf

Source code

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