CVE-2026-21725
LowCVSS 2.6Exploitation Probability (EPSS)
Low risk7th percentile — higher than 7% of all known CVEs
Summary
A TOCTOU vulnerability allows recently deleted-then-recreated data sources to be re-deleted without proper permissions.
Risk Assessment
An attacker with admin access may exploit this vulnerability to unauthorized deletion of data sources, potentially leading to loss of critical information.
Recommendation
It is recommended to monitor admin access and implement additional security measures to mitigate the risk of unauthorized data source deletion.
Original NVD description (English source)
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.