CVE-2026-127076

OpsTree BuildPiper before 2.7.0 Broken Access Control via git_repo API

Published Nov 13, 2026 CVSS 4.0 · 7.1 High EPSS n/a KEV · Not listed

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.

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 High

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 High

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/2c7f64bebb810f565223b6916551df36
https://www.buildpiper.io/
https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-broken-access-control-via-git-repo-api

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 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.
Title		OpsTree BuildPiper before 2.7.0 Broken Access Control via git_repo API
Weaknesses		CWE-639
References		https://gist.github.com/neelkotnis/2c7f64bebb810f565223b6916551df36 https://www.buildpiper.io/ https://www.vulncheck.com/advisories/opstree-buildpiper-before-2.7.0-broken-access-control-via-git-repo-api
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}` cvssV4_0 `{'score': 7.1, 'vector': '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'}`