CVE-2025-13281: kube-controller-manager is vulnerable to half-blind Server Side Request Forgery through in-tree Portworx StorageClass

CVE-2025-13281 · Severity: medium · CVSS 5.8 · Published 2025-12-14

A half-blind Server Side Request Forgery (SSRF) vulnerability exists in kube-controller-manager when using the in-tree Portworx StorageClass. This vulnerability allows authorized users to leak arbitrary information from unprotected endpoints in the control plane’s host network (including link-local or loopback services).

Technologies: k8s.io/kubernetes (Go). Vendors: Go.

Quick answers

Is CVE-2025-13281 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-13281 being exploited in the wild.
How severe is CVE-2025-13281?
Medium severity, with a CVSS score of 5.8, published 14 December 2025.
Which products and versions are affected?
k8s.io/kubernetes (Go) SEMVER:introduced=0,fixed=1.32.10, SEMVER:introduced=0,fixed=1.32.10,introduced=1.33.0-alpha.0,fixed=1.33.6,introduced=1.34.0-alpha.0,fixed=1.34.2.
Is there a fix for CVE-2025-13281?
Yes. k8s.io/kubernetes (Go): upgrade to 1.32.10, 1.34.2 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-13281?
Check whether you run k8s.io/kubernetes (Go) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • k8s.io/kubernetes (Go): upgrade to 1.32.10, 1.34.2 or later
    go get k8s.io/kubernetes@v1.34.2

Affected products

  • k8s.io/kubernetes (Go) SEMVER:introduced=0,fixed=1.32.10, SEMVER:introduced=0,fixed=1.32.10,introduced=1.33.0-alpha.0,fixed=1.33.6,introduced=1.34.0-alpha.0,fixed=1.34.2

Identifiers

  • CVE-2025-13281
  • GHSA-r6j8-c6r2-37rr
  • GO-2025-4240

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