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CVE Vulnerability Details :
CVE-2026-21725
PUBLISHED
More InfoOfficial Page
Assigner-GRAFANA
Assigner Org ID-57da9224-a3e2-4646-9d0e-c4dc2e05e7da
View Known Exploited Vulnerability (KEV) details
Published At-25 Feb, 2026 | 12:35
Updated At-25 Feb, 2026 | 15:13
Rejected At-
▼CVE Numbering Authority (CNA)
Authorization Bypass via TOCTOU in Grafana Datasource Deletion by Name

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.

Affected Products
Vendor
Grafana LabsGrafana
Product
Grafana
Platforms
  • OnPrem
Default Status
unaffected
Versions
Affected
  • From v11.0.0 before v12.4.1 (semver)
Metrics
VersionBase scoreBase severityVector
3.12.6LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Version: 3.1
Base score: 2.6
Base severity: LOW
Vector:
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
https://grafana.com/security/security-advisories/cve-2026-21725
vendor-advisory
Hyperlink: https://grafana.com/security/security-advisories/cve-2026-21725
Resource:
vendor-advisory
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions

Configurations

Workarounds

Exploits

Credits

Timeline
EventDate
Replaced By

Rejected Reason

References
HyperlinkResource
Details not found