CVE-2026-3864CSI Driver for NFS path traversal via subDir may delete unintended directories on the NFS server
Updated under an hour ago ()
Does this affect you?
It affects Kubernetes CSI Driver for NFS. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A vulnerability was discovered in the Kubernetes CSI Driver for NFS where the subDir parameter in volume identifiers was insufficiently validated. Attackers with the ability to create PersistentVolumes referencing the NFS 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 NFS export. This may lead to deletion or modification of directories on the NFS server.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:H
- Weakness (CWE)
- CWE-22
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- kubernetes
- NVD analysis
- Awaiting Analysis
- Record last updated
- Mar 23, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Kubernetes CSI Driver for NFS kubernetes:csi_driver_for_nfs (from the name) | before 4.13.1; 4.13.1 not affected | CNA record |
References
- https://groups.google.com/g/kubernetes-security-announce/c/i4ZKN9VLcUEmailing-list
- https://github.com/kubernetes/kubernetes/issues/137797issue-tracking
- http://www.openwall.com/lists/oss-security/2026/03/17/1
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.