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

Source: https://junglewise.ai/threats/cve-2025-13281-kube-controller-manager-is-vulnerable-to-half-blind-server-side  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-14  
License: CC BY 4.0 with a link back

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)](https://junglewise.ai/threats/technologies/k8s-io-kubernetes). Vendors: [Go](https://junglewise.ai/threats/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

  ```sh
  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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