Medium severity · published Oct 26, 2026
CVE-2026-2270
StatefulSet and ControllerRevision write permissions allow cross-namespace pod creation
New
5.9
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KU
Kubernetes · Kubernetes
v1.34.0 through v1.34.11; v1.35.0 through v1.35.8; v1.36.0 through v1.36.4; v1.37.0 through v1.37.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2270
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2270
github.com
https://github.com/kubernetes/kubernetes/issues/142097
groups.google.com
https://groups.google.com/g/kubernetes-security-announce/c/wv0iV-Rcmj4
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/09/23/35
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