Moby Plugin Privilege Validation Bypass <29.3.1
CVE-2026-33997 Published on March 31, 2026

Moby: Off-by-one error in plugin privilege validation
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.

NVD

Vulnerability Analysis

CVE-2026-33997 can be exploited with network access, requires user interaction and user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
REQUIRED
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Types

What is an off-by-five Vulnerability?

A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.

CVE-2026-33997 has been classified to as an off-by-five vulnerability or weakness.

Incorrect Privilege Assignment

A product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.


Products Associated with CVE-2026-33997

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Red Hat Multicluster Globalhub
 
Red Hat Multicluster Engine
 
Red Hat Service Mesh
 
Red Hat Acm
 
Red Hat Openshift
 
Red Hat Container Native Virtualization
 

Affected Versions

moby: Red Hat Multicluster Global Hub 1.4.5: Red Hat Multicluster Global Hub 1.5.4: Red Hat Multicluster Global Hub 1.6.2: Red Hat Multicluster Engine for Kubernetes: Red Hat OpenShift Service Mesh 2: Red Hat Advanced Cluster Management for Kubernetes 2: Red Hat OpenShift Container Platform 4: Red Hat OpenShift Virtualization 4:

Exploit Probability

EPSS
0.32%
Percentile
23.06%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.