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

CVE	CVE-2026-33997
State	PUBLISHED
Assigner	GitHub_M
Source Priority	CVE Program / NVD first with legacy fallback
Published	2026-03-31 03:15:57 UTC
Updated	2026-06-30 03:18:49 UTC
Description	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.

Primary CVSS: v3.1 8.1 HIGH from [email protected]

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

EPSS: 0.003870000 probability, percentile 0.306710000 (date 2026-07-02)

Problem Types: CWE-193 | CWE-266 | CWE-193 CWE-193: Off-by-one Error | CWE-266 Incorrect Privilege Assignment

Version	Source	Type	Score	Severity	Vector
3.1	[email protected]	Primary	8.1	HIGH	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N`
3.1	ADP	CVSS	8.4	HIGH	`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`
3.1	[email protected]	Secondary	6.8	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N`
3.1	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	Secondary	8.4	HIGH	`CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H`
3.1	CNA	DECLARED	6.8	MEDIUM	`CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N`

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

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

Type	Vendor	Product	Version	Update	Edition	Language
Application	Docker	Engine	All	All	All	All

Source	Vendor	Product	Version	Platforms
CNA	Moby	Moby	affected < 29.3.1	Not specified
ADP	Red Hat	Multicluster Global Hub 1.4.5	Not specified	Not specified
ADP	Red Hat	Multicluster Global Hub 1.5.4	Not specified	Not specified
ADP	Red Hat	Multicluster Global Hub 1.6.2	Not specified	Not specified
ADP	Red Hat	Multicluster Engine For Kubernetes	Not specified	Not specified
ADP	Red Hat	OpenShift Service Mesh 2	Not specified	Not specified
ADP	Red Hat	Red Hat Advanced Cluster Management For Kubernetes 2	Not specified	Not specified
ADP	Red Hat	Red Hat OpenShift Container Platform 4	Not specified	Not specified
ADP	Red Hat	Red Hat OpenShift Virtualization 4	Not specified	Not specified

Reference	Source	Link	Tags
access.redhat.com/security/cve/CVE-2026-33997	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
github.com/moby/moby/security/advisories/GHSA-pxq6-2prw-chj9	[email protected]	github.com	Vendor Advisory
access.redhat.com/errata/RHSA-2026:21769	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
bugzilla.redhat.com/show_bug.cgi	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	bugzilla.redhat.com
access.redhat.com/errata/RHSA-2026:23345	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
access.redhat.com/errata/RHSA-2026:22347	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	access.redhat.com
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33997.json	0b0ca135-0b70-47e7-9f44-1890c2a1c46c	security.access.redhat.com
github.com/moby/moby/releases/tag/docker-v29.3.1	[email protected]	github.com	Release Notes
CVE Program record	CVE.ORG	www.cve.org	canonical
NVD vulnerability detail	NVD	nvd.nist.gov	canonical, analysis

No vendor comments have been submitted for this CVE.

Source	Time	Event
ADP	2026-03-31T03:01:29.529Z	Reported to Red Hat.
ADP	2026-03-31T01:36:51.404Z	Made public.

ADP: RHSA-2026:22347: Multicluster Global Hub 1.4.5

ADP: RHSA-2026:21769: Multicluster Global Hub 1.5.4

ADP: RHSA-2026:23345: Multicluster Global Hub 1.6.2

There are currently no legacy QID mappings associated with this CVE.