CVE-2026-127074

OpsTree BuildPiper before 2.7.0 Path Traversal via Dockerfile Path and Build Context

Published Nov 13, 2026 CVSS 4.0 · 5.3 Medium EPSS n/a KEV · Not listed

Description

OpsTree BuildPiper before 2.7.0 contains a path traversal vulnerability that allows authenticated users with build configuration permission to read files on the build worker by supplying unvalidated dockerfile_path and build context values. Attackers can set traversal or absolute paths such as /etc/passwd via the CI configuration endpoint, then trigger a build to disclose file contents in the build log.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

OpsTree Solutions

BuildPiper

unaffected

Version	Status	Constraints
`0`	affected	< 2.7.0

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://gist.github.com/neelkotnis/58e88fa3decf9e0145bf28a4b61a394a
https://www.buildpiper.io/
https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-path-traversal-via-dockerfile-path-and-build-context

History

Nov 13, 2026 9:45 AM Description updated. Title updated. Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		OpsTree BuildPiper before 2.7.0 contains a path traversal vulnerability that allows authenticated users with build configuration permission to read files on the build worker by supplying unvalidated dockerfile_path and build context values. Attackers can set traversal or absolute paths such as /etc/passwd via the CI configuration endpoint, then trigger a build to disclose file contents in the build log.
Title		OpsTree BuildPiper before 2.7.0 Path Traversal via Dockerfile Path and Build Context
Weaknesses		CWE-22
References		https://gist.github.com/neelkotnis/58e88fa3decf9e0145bf28a4b61a394a https://www.buildpiper.io/ https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-path-traversal-via-dockerfile-path-and-build-context
Metrics		cvssV3_1 `{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}`