CVE-2026-21725

A time-of-create-to-time-of-use (TOCTOU) vulnerability lets recently deleted-then-recreated data sources be re-deleted without permission to do so. This requires several very stringent conditions to be met: - The attacker must have admin access to the specific datasource prior to its first deletion. - Upon deletion, all steps within the attack must happen within the next 30 seconds and on the same pod of Grafana. - The attacker must delete the datasource, then someone must recreate it. - The new datasource must not have the attacker as an admin. - The new datasource must have the same UID as the prior datasource. These are randomised by default. - The datasource can now be re-deleted by the attacker. - Once 30 seconds are up, the attack is spent and cannot be repeated. - No datasource with any other UID can be attacked.

CVSS v3 2.6 LOW

2.6^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.2 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-21725	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:grafana:grafana:*:-:*:*:enterprise:*:*:*

History

27 Feb 2026, 03:34

Type	Values Removed	Values Added
First Time		Grafana Grafana grafana
References	~~() https://grafana.com/security/security-advisories/cve-2026-21725 -~~	() https://grafana.com/security/security-advisories/cve-2026-21725 - Vendor Advisory
CPE		cpe:2.3:a:grafana:grafana::-:::enterprise:::
CWE		CWE-367

25 Feb 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-02-25 13:16

Updated : 2026-02-27 03:34

NVD link : CVE-2026-21725

Mitre link : CVE-2026-21725

CVE.ORG link : CVE-2026-21725

JSON object : View

Products Affected

grafana

grafana

CWE

CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition

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