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CVE-2026-21724— Missing Protected-field Authorization in Provisioning Contact Points API

Quick assessment

Affected
Grafana Grafana OSS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grafana OSS是Grafana开源的一个可视化仪表盘。 Grafana OSS存在安全漏洞，该漏洞源于配置联系点API存在授权绕过，可能导致具有Editor角色的用户修改受保护的Webhook URL。

CVSS 5.4 · Medium EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1136.001 · Local Account

Affected Version Matrix 4

VendorProduct Version RangeStatus
Grafana Grafana OSS 12.3.1< 12.3.6 affected
12.2.2< 12.2.8 affected
12.1.5< 12.1.10 affected
11.6.9< 11.6.14 affected
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I. Basic Information for CVE-2026-21724

Vulnerability Information
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Vulnerability Title
Missing Protected-field Authorization in Provisioning Contact Points API
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana OSS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana OSS是Grafana开源的一个可视化仪表盘。 Grafana OSS存在安全漏洞，该漏洞源于配置联系点API存在授权绕过，可能导致具有Editor角色的用户修改受保护的Webhook URL。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Grafana Grafana OSS 12.3.1 ~ 12.3.6 -

II. Public POCs for CVE-2026-21724

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III. Intelligence Information for CVE-2026-21724

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Same Patch Batch · Grafana · 2026-03-26 · 3 CVEs total

CVE-2026-28377 7.5 HIGH S3 SSE-C Encryption Key Exposed in Plaintext via Config Endpoint (CVE-2025-41118 Pattern)
CVE-2026-33375 6.5 MEDIUM Grafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoS

IV. Related Vulnerabilities

Same product: Grafana OSS
Same vendor: Grafana

V. Comments for CVE-2026-21724

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