CVE-2026-2270
StatefulSet and ControllerRevision write permissions allow cross-namespace pod creation
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.
INFO
Published Date :
Oct. 26, 2026, 11:17 p.m.
Last Modified :
Oct. 27, 2026, 12:17 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | a6081bf6-c852-4425-ad4f-a67919267565 | ||||
| CVSS 3.1 | MEDIUM | MITRE-CVE | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the StatefulSet controller to the latest version.
- Ensure RBAC rules restrict write permissions on StatefulSet objects.
- Validate OwnerReference UIDs to prevent cross-namespace resource creation.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-2270.
| URL | Resource |
|---|---|
| https://github.com/kubernetes/kubernetes/issues/142097 | |
| https://groups.google.com/g/kubernetes-security-announce/c/wv0iV-Rcmj4 | |
| http://www.openwall.com/lists/oss-security/2026/09/23/35 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-2270 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-2270
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-2270 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-2270 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Oct. 27, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/09/23/35 -
New CVE Received by [email protected]
Oct. 26, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N Added CWE CWE-639 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/2xxx/CVE-2026-2270.json">CVE-2026-2270</a> Added Reference https://github.com/kubernetes/kubernetes/issues/142097 Added Reference https://groups.google.com/g/kubernetes-security-announce/c/wv0iV-Rcmj4