CVE-2026-127080
OpsTree BuildPiper before 2.7.0 Container Escape via Unrestricted HostPath Volumes
CVSS Score
9.9
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-269 |
| Vendor | opstree solutions |
| Product | buildpiper |
| Published | Nov 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
OpsTree Solutions / BuildPiper
0 < 2.7.0
References
Credits
Neel Saurabh Kotnis