CVE-2026-127076

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.

Severity scores

Each score is shown as its source gave it. They are not averaged or merged.

• 7.1CVSS 4.0, Highfrom the CNA (VulnCheck)CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
• 6.5CVSS 3.1, Mediumfrom the CNA (VulnCheck)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Historical context and remediation

This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.

No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.

No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.

Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.

Read the original CVE record.

Affected products

Timeline

1. 13 Nov 2026 Published

Weakness

• CWE-639

References

• gist.github.comtechnical-descriptionexploit
• BuildPiper Product Pageproduct
• VulnCheck Advisory: OpsTree BuildPiper before 2.7.0 Broken Access Control via git_repo APIthird-party-advisory