CVE-2026-21724— Missing Protected-field Authorization in Provisioning Contact Points API
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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: NVD (National Vulnerability Database)
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: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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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 vendor: Grafana
- CVE-2026-21728
Tempo query limit results in unbounded memory allocation - CVE-2026-21726
Loki Path Traversal - CVE-2021-36156 Bypass - CVE-2025-41118
Sensitive COS `SecretKey` exposed in plaintext via configura - CVE-2026-21727
Grafana Correlations: Cross-Tenant Data Disclosure and Perma - CVE-2025-12141
Grafana Alerting Editors can edit destination of webhooks th
V. Comments for CVE-2026-21724
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