Broken Access Control in OpsTree BuildPiper Allows Unauthorized Repository Access
CVE-2026-127076

7.1HIGH

Key Information:

Vendor

Opstree Solutions

Status
Buildpiper
Vendor
CVE Published:
13 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-127076?

OpsTree BuildPiper versions prior to 2.7.0 are susceptible to a broken access control vulnerability, allowing authenticated users to gain unauthorized access to Git repositories that should be restricted to other projects. Through the GET /api/v1/git_repo/?all=true endpoint, attackers can enumerate repositories and exploit this vulnerability by submitting any git_repo_id to the CI endpoint. This flaw enables attackers to clone source code, manifests, and potentially sensitive committed secrets from other projects, posing a significant risk to data security and integrity.

Affected Version(s)

BuildPiper 0 < 2.7.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-127076 - Proof of Concept

References

https://gist.github.com/neelkotnis/2c7f64bebb810f565223b6...
technical-descriptionexploit
https://www.buildpiper.io/
product
https://www.vulncheck.com/advisories/opstree-buildpiper-b...
third-party-advisory

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Neel Saurabh Kotnis
.