CVE-2026-32241: Flannel vulnerable to cross-node remote code execution via extension backend BackendData injection

Overview

Severity

High (CVSS 7.5)

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Status

Not Exploited

Patch Tuesday

2026-Mar

Released

2026-03-29

EPSS Score

0.13% (percentile: 32.5%)

Affected Products (1)

Other

• 20996-17084

Revision History

• 2026-03-29: Information published.