OpsTree BuildPiper before 2.7.0 contains an improper authorization vulnerability that allows authenticated deploy users to define arbitrary Kubernetes hostPath volumes without allow-list or policy checks. Attackers can set the host path to / in the Define HostPath Volume configuration to mount the worker node root filesystem read-write, breaking container isolation and enabling node and cluster compromise.
History

Sun, 15 Nov 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Opstree Solutions
Opstree Solutions buildpiper
Vendors & Products Opstree Solutions
Opstree Solutions buildpiper

Fri, 13 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description OpsTree BuildPiper before 2.7.0 contains an improper authorization vulnerability that allows authenticated deploy users to define arbitrary Kubernetes hostPath volumes without allow-list or policy checks. Attackers can set the host path to / in the Define HostPath Volume configuration to mount the worker node root filesystem read-write, breaking container isolation and enabling node and cluster compromise.
Title OpsTree BuildPiper before 2.7.0 Container Escape via Unrestricted HostPath Volumes
Weaknesses CWE-269
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.4, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-11-13T09:34:21.479Z

Updated: 2026-11-13T22:30:57.972Z

Reserved: 2026-11-12T14:12:09.969Z

Link: CVE-2026-127080

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-11-13T10:18:04.260

Modified: 2026-11-13T23:17:17.230

Link: CVE-2026-127080

cve-icon Redhat

No data.