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

EPSS Score

0.03% (percentile: 8.1%)

Affected Products (2)

Other

• 20987-17086
• 19431-17084

Revision History

• 2026-03-28: Information published.