CVE-2026-2270
Published:October 26, 2026
Updated:November 04, 2026
A confused deputy attack exists in the StatefulSet controller that allows a user with namespace-scoped write permissions on StatefulSet and ControllerRevision objects to create a cross-namespace pod. An attacker exploiting this vulnerability would have full control over the resulting pod’s metadata and specification, including namespace selection. Note that the cross-namespace pod will be immediately deleted by the garbage collector unless the attacker is able to construct a valid StatefulSet OwnerReference. This would require referencing the UID of an existing StatefulSet in the victim’s namespace.
Affected Packages
https://github.com/kubernetes/kubernetes.git (GITHUB):
Affected version(s) >=v1.37.0-alpha.0 <v1.37.1Fix Suggestion:
Update to version v1.37.1https://github.com/kubernetes/kubernetes.git (GITHUB):
Affected version(s) >=v1.35.0-alpha.0 <v1.35.9Fix Suggestion:
Update to version v1.35.9https://github.com/kubernetes/kubernetes.git (GITHUB):
Affected version(s) >=v1.23.0-rc.0 <v1.34.12Fix Suggestion:
Update to version v1.34.12https://github.com/kubernetes/kubernetes.git (GITHUB):
Affected version(s) >=v1.36.0-alpha.0 <v1.36.5Fix Suggestion:
Update to version v1.36.5k8s.io/kubernetes (GO):
Affected version(s) >=v1.36.0-alpha.0 <v1.36.5Fix Suggestion:
Update to version v1.36.5k8s.io/kubernetes (GO):
Affected version(s) >=v1.35.0-alpha.0 <v1.35.9Fix Suggestion:
Update to version v1.35.9k8s.io/kubernetes (GO):
Affected version(s) >=v1.37.0-alpha.0 <v1.37.1Fix Suggestion:
Update to version v1.37.1k8s.io/kubernetes (GO):
Affected version(s) >=v1.23.0-rc.0 <v1.34.12Fix Suggestion:
Update to version v1.34.12Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.4
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Authorization Bypass Through User-Controlled Key
EPSS
Base Score:
0.34