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

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.

Published: 2026-03-26 Last update: 2026-04-14 Assigner: [email protected] Source: [email protected]
NVD Status：Analyzed，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-21724 is rated Low Risk (24.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.03%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-21724

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-27 — 0.03% —

Full EPSS history (1 record total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-21724

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.4 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 2.5 [email protected]
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 [email protected]

Weakness enumeration for CVE-2026-21724

GitHub Security Advisory for CVE-2026-21724

GHSA-7g92-g4vh-hp84 · Severity: medium · Ecosystem: go — Grafana OSS: Authorization bypass allows users with Editor role to modify protected webhook URLs without permissions

OS Trackers for CVE-2026-21724

vendor priority summary link
redhat medium — https://access.redhat.com/security/cve/CVE-2026-21724
suse medium CVE-2026-21724 severity moderate: SUSE including 10 source package names (firewalld-prometheus-config-0.1-150002.3.8.1, golang-github-lusitaniae-apache_exporter-1.0.10-150002.3.6.1, …), 15 product×package rows across 2 product lines (SUSE Multi Linux Manager Tools SLE-15, SUSE Multi Linux Manager Tools SLE-Micro-5): First Fixed 15. https://www.suse.com/security/cve/CVE-2026-21724/
ubuntu medium CVE-2026-21724 medium priority: Ubuntu including 1 source packages (grafana), 5 status rows across 5 suites (jammy, noble, questing, upstream, xenial): DNE 3, needs-triage 2. https://ubuntu.com/security/CVE-2026-21724

Affected software / configurations for CVE-2026-21724

Vendor Product Version Raw CPE
grafana grafana >= 11.6.9, < 11.6.14 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.1.5, < 12.1.10 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.2.2, < 12.2.8 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
grafana grafana >= 12.3.1, < 12.3.6 cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*

References for CVE-2026-21724

cvelogic Threat Intelligence