Local Path Provisioner: HelperPod Template Injection
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Privilege escalation, Code execution
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-269 and CWE-1336.
Summary
Local Path Provisioner provides a way for the Kubernetes users to utilize the local storage in each node. Prior to 0.0.36, a malicious user with permission to edit the local-path-config ConfigMap in the local-path-storage namespace can manipulate the helperPod.yaml template used by rancher/local-path-provisioner. The helperPod.yaml template is loaded by the provisioner and used to create HelperPods during PVC provisioning and cleanup operations. However, the template is not sufficiently validated before use. Security-sensitive fields such as securityContext.privileged, hostPath volumes, and Linux capabilities can be injected into the template. When a PVC operation triggers HelperPod creation, the provisioner creates the HelperPod using the attacker-controlled template. This can result in a privileged pod running on the target node with the host root filesystem mounted. This may allow the attacker to access sensitive host files, read ServiceAccount tokens from other pods on the same node, access other tenants' local-path volume data, or modify files on the host node. This vulnerability is fixed in 0.0.36.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| Rancher | local-path-provisioner | before 0.0.36 | 0.0.36 | Patch available | CNA |
| — | github.com/rancher/local-path-provisioner (Go) | before 0.0.36 | 0.0.36 | Patch available | GHSA-7fxv-8wr2-mfc4 |
- local-path-provisioner VendorRancher Affected before 0.0.36 Fixed in 0.0.36 Patch available CNA
- github.com/rancher/local-path-provisioner (Go) Vendor— Affected before 0.0.36 Fixed in 0.0.36 Patch available GHSA-7fxv-8wr2-mfc4
Remediation
- Fix · CNA local-path-provisioner (rancher) Fixed in 0.0.36
- Fix · GHSA-7fxv-8wr2-mfc4 github.com/rancher/local-path-provisioner (Go) Fixed in 0.0.36 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-44543
- 2026-10-03 Alias added: GHSA-7fxv-8wr2-mfc4
References
More Rancher vulnerabilities
- TI-2021-07559 Rancher: Cloud credentials can be used through proxy API by users without access CVSS 3.1CRITICAL 9.9
- TI-2021-14897 Steve API proxy impersonation CVSS 3.1HIGH 8.8
- TI-2021-14896 Deleting PRTBs associated to a group doesn't cause deletion of corresponding RoleBindings CVSS 3.1HIGH 8.8
- TI-2021-11979 Rancher: Privilege escalation vulnerability via malicious Connection header CVSS 3.1HIGH 8.8
- TI-2021-07557 rancher: API group not properly specified when creating Kubernetes RBAC resources CVSS 3.1HIGH 8.8
- TI-2026-40392 Long-lived Rancher registration token exposed in plaintext CVSS 3.1HIGH 8.8
Sources
- CVE-2026-44543 · CVE Program
- CVE-2026-44543 · NVD
- FIRST EPSS
- GHSA-7fxv-8wr2-mfc4 · GitHub Advisory Database · CC BY 4.0
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