Portworx Half-Blind SSRF in kube-controller-manager
Priority LOW 26CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- High
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Partial Red Hat: 15 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-918 and the CVSS impact.
Summary
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).
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00389 33rd percentileScored 2026-11-07
Fix Partial k8s.io/kubernetes (Go): 1.32.10, 1.33.6, 1.34.2Red Hat: 15 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Kubernetes | Kubernetes | v1.30.0 – v1.30.14; v1.31.0 – v1.31.14; v1.32.0 – v1.32.9; v1.33.0 – v1.33.5; v1.34.0 – v1.34.1 | — | No fix listed | CNA |
| — | k8s.io/kubernetes (Go) | before 1.32.10 | 1.32.10 | Patch available | GHSA-r6j8-c6r2-37rr |
| — | k8s.io/kubernetes (Go) | 1.33.0-alpha.0 to before 1.33.6 | 1.33.6 | Patch available | GHSA-r6j8-c6r2-37rr |
| — | k8s.io/kubernetes (Go) | 1.34.0-alpha.0 to before 1.34.2 | 1.34.2 | Patch available | GHSA-r6j8-c6r2-37rr |
- Kubernetes VendorKubernetes Affected v1.30.0 – v1.30.14; v1.31.0 – v1.31.14; v1.32.0 – v1.32.9; v1.33.0 – v1.33.5; v1.34.0 – v1.34.1 Fixed in — No fix listed CNA
- k8s.io/kubernetes (Go) Vendor— Affected before 1.32.10 Fixed in 1.32.10 Patch available GHSA-r6j8-c6r2-37rr
- k8s.io/kubernetes (Go) Vendor— Affected 1.33.0-alpha.0 to before 1.33.6 Fixed in 1.33.6 Patch available GHSA-r6j8-c6r2-37rr
- k8s.io/kubernetes (Go) Vendor— Affected 1.34.0-alpha.0 to before 1.34.2 Fixed in 1.34.2 Patch available GHSA-r6j8-c6r2-37rr
CPE names Threatist (inferred) · 1
Inferred from how NVD named this product before; not given by a source.
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* | — | — | Kubernetes |
- cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* Versions — — ·Kubernetes
Remediation
- Fix · GHSA-r6j8-c6r2-37rr k8s.io/kubernetes (Go) Fixed in 1.32.10 Advisory →
- Fix · GHSA-r6j8-c6r2-37rr k8s.io/kubernetes (Go) Fixed in 1.33.6 Advisory →
- Fix · GHSA-r6j8-c6r2-37rr k8s.io/kubernetes (Go) Fixed in 1.34.2 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Builds for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| External Secrets Operator for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Logical Volume Manager Storage | Affected | No fix yet: Fix deferred |
| Multicluster Engine for Kubernetes | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Edge Manager preview | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift GitOps | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift for Windows Containers | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 16.2 | Affected | No fix yet: Fix deferred |
| Red Hat OpenStack Platform 17.1 | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet: Fix deferred |
| cert-manager Operator for Red Hat OpenShift | Affected | No fix yet |
| external secrets operator for Red Hat OpenShift - Tech Preview | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-02 Threatist record created from CVE-2025-13281
- 2026-10-03 Alias added: GHSA-r6j8-c6r2-37rr
References
Advisory 2
Other 7
- https://github.com/kubernetes/kubernetes/issues/135525
- https://groups.google.com/g/kubernetes-security-announce/c/EORqZg0k1l4/m/TtD-q0v7AgAJ
- https://github.com/kubernetes/kubernetes/commit/7506ce804c20696ba32cdb72126270ceaed06e24
- https://github.com/kubernetes/kubernetes/commit/97650c1c4fe15cbb7756ba95b3edc8a8665063ca
- https://github.com/kubernetes/kubernetes/commit/dbe17dfe7773563eac95534040f413ada6d2b421
- https://github.com/kubernetes/kubernetes
- http://www.openwall.com/lists/oss-security/2025/12/01/4
More Kubernetes vulnerabilities
- TI-2025-01719 ingress-nginx admission controller RCE escalation CVSS 3.1CRITICAL 9.8
- TI-2018-16130 Improper privilege management in Kubernetes CVSS 3.0CRITICAL 9.8
- TI-2025-00932 ingress-nginx controller - configuration injection via unsanitized mirror annotations CVSS 3.1HIGH 8.8
- TI-2019-08418 Kubernetes kubelet exposes /debug/pprof info on healthz port CVSS 3.1HIGH 8.2
- TI-2026-02839 ingress-nginx rewrite-target nginx configuration injection CVSS 3.1HIGH 8.8
- TI-2025-18233 ingress-nginx controller - configuration injection via unsanitized auth-url annotation CVSS 3.1HIGH 8.8
Sources
- CVE-2025-13281 · CVE Program
- CVE-2025-13281 · NVD
- FIRST EPSS
- GHSA-r6j8-c6r2-37rr · GitHub Advisory Database · CC BY 4.0
- CVE-2025-13281 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences