CVE-2026-33343: etcd: Nested etcd transactions bypass RBAC authorization checks
Overview
- Severity
- Medium (CVSS 5.4)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Mar
- Released
- 2026-03-28
- Last Updated
- 2026-03-31
- EPSS Score
- 0.01% (percentile: 3.1%)
Affected Products (2)
Open Source Software
- cbl2 etcd 3.5.21-4 on CBL Mariner 2.0
Mariner
- azl3 etcd 3.5.21-1 on Azure Linux 3.0
Revision History
- 2026-03-28: Information published.
- 2026-03-28: Information published.
- 2026-03-31: Information published.