Path traversal via non-tar copyDirectoryFromPod
Priority LOW 14CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.0 · CNA. Fix status from CNA.
Summary
A security issue was discovered in the Kubernetes Java client library where a compromised pod may be able to create new files in arbitrary locations on the client machine executing copy operations via non-tar copyDirectoryFromPod when enableTarCompressing is false.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00377 31st percentileScored 2026-11-07
Fix Fixed kubernetes-client/java (Kubernetes): 25.0.1, 26.0.1, 27.0.0
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-client/java | 10.0.0 to before 25.0.1; 26.0.0 | 25.0.1, 26.0.1, 27.0.0 | Patch available | CNA |
- kubernetes-client/java VendorKubernetes Affected 10.0.0 to before 25.0.1; 26.0.0 Fixed in 25.0.1, 26.0.1, 27.0.0 Patch available CNA
Remediation
- Fix · CNA kubernetes-client/java (Kubernetes) Fixed in 25.0.1, 26.0.1, 27.0.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-15687
- 2026-10-03 Alias added: GHSA-95wq-2cx3-rp73
References
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-2026-15687 · CVE Program
- CVE-2026-15687 · NVD
- FIRST EPSS
- GHSA-95wq-2cx3-rp73 · GitHub Advisory Database · CC BY 4.0
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