CVE-2026-33997 MEDIUM

CVE-2026-33997: Moby: Off-by-one error in plugin privilege validation

Vendor Moby
Product moby
Weakness CWE-193
Published March 31, 2026
Last update June 30, 2026

CVSS base score

6.8/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows plugins privilege validation to be bypassed during docker plugin install. Due to an error in the daemon's privilege comparison logic, the daemon may incorrectly accept a privilege set that differs from the one approved by the user. Plugins that request exactly one privilege are also affected, because no comparison is performed at all. This issue has been patched in version 29.3.1.

Key dates

02Disclosure timeline

March 31, 2026 CVE published
June 30, 2026 Record updated