CVE-2026-21725
Authorization Bypass via TOCTOU in Grafana Datasource Deletion by Name
描述
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.
如何修補 CVE-2026-21725
要修補 CVE-2026-21725,請將受影響套件升級到下列已修補版本。
- —升級至 12.4.1 或更新版本
CVE-2026-21725 正在被利用嗎?
低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 11.0.0, < 12.4.1
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.0 | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N |