Bug 2458520 (CVE-2026-3865) - CVE-2026-3865 csi-driver-smb: Kubernetes CSI Driver for SMB: Path Traversal vulnerability allows unauthorized file operations via insufficient subDir validation.
Summary: CVE-2026-3865 csi-driver-smb: Kubernetes CSI Driver for SMB: Path Traversal v...
Keywords:
Status: NEW
Alias: CVE-2026-3865
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
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Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-04-14 22:59 UTC by OSIDB Bzimport
Modified: 2026-06-18 14:00 UTC (History)
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Description OSIDB Bzimport 2026-04-14 22:59:00 UTC 
A vulnerability was discovered in the Kubernetes CSI Driver for SMB where the subDir parameter in volume identifiers was insufficiently validated. Attackers with the ability to create PersistentVolumes referencing the SMB CSI driver could craft volume identifiers containing path traversal sequences (../). During volume deletion or cleanup operations, the driver could operate on unintended directories outside the intended managed path within the SMB export.

https://github.com/kubernetes-csi/csi-driver-smb/pull/1020
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