CVE-2026-21724: Grafana OSS · Improper Authorization
Affects Grafana OSSSource CVE Database V5
Not known to be exploited · CVSS 5.4 Medium · fixed in 12.3.6 : update Grafana OSS when convenient.
Data as of 29 Oct 2026, 19:04 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 12.3.6, 12.2.8, 12.1.10 +1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 26 Mar 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade Grafana OSS to 12.3.6, 12.2.8, 12.1.10 or 11.6.14.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GrafanaGrafana OSS | Affected
| Fixed in
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| GrafanaGrafana OSS | Affected
| Fixed in
|
| GrafanaGrafana OSS | Affected
| Fixed in
|
| GrafanaGrafana OSS | Affected
| Fixed in
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AI-suggested
If you cannot patch yet, restrict Editor role assignments to trusted users only and monitor changes to webhook configurations closely. Follow Grafana's official advisories for updates on patches or workarounds.
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.