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01 Record

CVE-2026-2270

StatefulSet and ControllerRevision write permissions allow cross-namespace pod creation

MediumPUBLISHEDCNA: kubernetes
CNA base score5.9 CVSS v3.xCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N

02 Description

StatefulSet and ControllerRevision write permissions allow cross-namespace pod creation

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.33% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 27.0% of scored records. A rank, not a probability.
NVD base score
5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
NVD analysis status
Awaiting Analysis. NVD last modified this record on 2026-10-29.
Red Hat severity
Moderate. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-10-26 22:30Z2 DAYS AGO
Last updated
2026-10-29 03:56Z5 HR AGO
Reserved
2026-02-10
Assigning CNA
kubernetes
Record state
PUBLISHED
Severity
Medium (CVSS 5.9)
CNA CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N
Weaknesses
  • CWE-639Authorization Bypass Through User-Controlled KeyBase
  • CWE-1220Insufficient Granularity of Access ControlBase
Data version
5.2
Document digest
ae348699bf827c8ff684b3692eda7603d090fe1be24e3ca6dfdd87db9eaf28fe

05 Affected products

VendorProductVersionsPlatforms
KubernetesKubernetesv1.34.0 to v1.34.11, v1.35.0 to v1.35.8, v1.36.0 to v1.36.4, v1.37.0 to v1.37.0—

06 References

07 Remediation

To mitigate this vulnerability, upgrade Kubernetes: https://kubernetes.io/docs/tasks/administer-cluster/cluster-upgrade/

08 Fixed in

Debian 12

  • kubernetes
    Fixed in 1.20.5+really1.20.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • kubernetes
    Fixed in 1.20.5+really1.20.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • kubernetes
    Fixed in 1.20.5+really1.20.2-1

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.