Bug 2442609 (CVE-2026-21725) - CVE-2026-21725 grafana: Grafana: Unauthorized data source deletion via time-of-create-to-time-of-use (TOCTOU) vulnerability
Summary: CVE-2026-21725 grafana: Grafana: Unauthorized data source deletion via time-o...
Keywords:
Status: NEW
Alias: CVE-2026-21725
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-25 13:01 UTC by OSIDB Bzimport
Modified: 2026-02-25 20:03 UTC (History)
12 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-02-25 13:01:31 UTC
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.


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