---
id: "CVE-2026-127078"
page: "https://infrastack.ai/live/CVE-2026-127078"
kind: "vulnerability"
aliases: ["CVE-2026-127078"]
title: "OpsTree BuildPiper: authenticated users can attach other apps' environments"
severity: "high"
cvss: 7.1
epss: null
exploited: false
status: "open"
category: "other"
products: [{"name": "BuildPiper", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["buildpiper", "ci-cd", "other", "self-hosted"]
not_affected_if: ["single-tenant-deployment", "version-2.7.0-or-later"]
published_at: "2026-11-13T10:18:03+00:00"
first_seen_at: "2026-11-13T10:47:29+00:00"
updated_at: "2026-11-13T10:52:48+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-127078", "first_seen_at": "2026-11-13T10:47:29+00:00"}]
exploit_sources: []
---

# OpsTree BuildPiper: authenticated users can attach other apps' environments

Link for people: https://infrastack.ai/live/CVE-2026-127078 (this .md is for agents)

OpsTree BuildPiper before 2.7.0 lets a logged-in user attach another application's environment to their own service by supplying a foreign project_env_id. An attacker can then trigger builds and deployments using the other application's registries and deployment infrastructure.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:BuildPiper affected range not listed fixed no fixed version listed

## How to check

- Check the BuildPiper version in use; affected versions are those before `2.7.0`

## Fix

- OpsTree BuildPiper: `2.7.0` (fixed version per NVD description)

## Timeline

- 2026-11-13T10:47:29+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-127078

## Documents

- [advisory] Third-party advisory: www.vulncheck.com https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-authorization-bypass-via-project-env-id-parameter

## From the sources

OpsTree BuildPiper before 2.7.0 contains an authorization bypass vulnerability that allows authenticated users to attach another application's environment to their service by supplying a foreign project_env_id. Attackers can configure CI and trigger builds and deployments through the component env endpoints using the other application's configuration, registries and deployment infrastructure.

---

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