CVEvulnerability

CVE-2026-21725

2.0 LOW Published 2026-02-25 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2026-02-25
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
2.6 LOW — CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L
CVSS 3.1 ([email protected])
2.0 LOW — CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N
Weaknesses
CWE-367

Description

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 configurations

• grafana grafana (>= 11.0.0 < 12.4.1)

Related

Weakness · CWE (1)

  • CWE-367 Time-of-check Time-of-use (TOCTOU) Race Condition weakness

References