CVE-2026-127076
Received Received - Intake

OpsTree BuildPiper Broken Access Control Before 2.7.0

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: VulnCheck

Description
OpsTree BuildPiper before 2.7.0 contains a broken access control vulnerability that allows authenticated users to list and build from Git repositories restricted to other projects. Attackers can enumerate repositories via GET /api/v1/git_repo/?all=true and submit any git_repo_id to the ci endpoint, cloning other projects' source code, manifests, and committed secrets.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-127076
EUVD
EUVD-2026-125106

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
OpsTree Solutions BuildPiper From 0 (inc) to 2.7.0 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-639 The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

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Executive Summary

CVE-2026-127076 is a broken access control vulnerability in OpsTree BuildPiper versions before 2.7.0. It allows authenticated users to bypass access restrictions and interact with Git repositories belonging to other projects. Attackers can enumerate repositories via a specific API endpoint and then clone source code, manifests, and secrets from restricted projects.

Detection Guidance

Check for unauthorized access to the /api/v1/git_repo/?all=true endpoint by reviewing server logs for GET requests with this path. Look for suspicious git_repo_id submissions to the ci endpoint that clone repositories outside the user's project scope.

Impact Analysis

This vulnerability can lead to unauthorized access to sensitive data such as source code, deployment manifests, and committed secrets from other projects. Attackers with valid credentials can exploit it to clone and use repositories they should not have access to, potentially exposing confidential information.

Compliance Impact

This vulnerability can severely impact compliance with GDPR and HIPAA by exposing sensitive personal or health data. Unauthorized access to repositories may lead to data breaches, violating confidentiality requirements and resulting in legal penalties, reputational damage, and loss of trust.

Mitigation Strategies

Upgrade BuildPiper to version 2.7.0 or later. Ensure server-side validation of repository access controls is enforced for all endpoints. Review and restrict build configuration permissions to prevent unauthorized repository listing and cloning.

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