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Grafana OSS: Authorization bypass allows users with Editor role to modify protected webhook URLs without permissions

Moderate severity GitHub Reviewed Published Mar 26, 2026 to the GitHub Advisory Database • Updated Apr 23, 2026

Package

gomod github.com/grafana/grafana (Go)

Affected versions

< 1.9.2-0.20260323180334-daffe750de85

Patched versions

1.9.2-0.20260323180334-daffe750de85

Description

A vulnerability has been discovered in Grafana OSS where an authorization bypass in the provisioning contact points API allows users with Editor role to modify protected webhook URLs without the required alert.notifications.receivers.protected:write permission.

A patched version is available at https://github.com/grafana/grafana/releases/tag/v12.3.6.

References

Published by the National Vulnerability Database Mar 26, 2026
Published to the GitHub Advisory Database Mar 26, 2026
Reviewed Apr 23, 2026
Last updated Apr 23, 2026

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
Unchanged
Confidentiality
Low
Integrity
Low
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:U/C:L/I:L/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.
(4th percentile)

Weaknesses

Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.

CVE ID

CVE-2026-21724

GHSA ID

GHSA-7g92-g4vh-hp84

Source code

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