Authorization Bypass in OpsTree BuildPiper Affects Multiple Environments
CVE-2026-127078

7.1HIGH

Key Information:

Vendor

Opstree Solutions

Status
Buildpiper
Vendor
CVE Published:
13 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-127078?

OpsTree BuildPiper prior to version 2.7.0 is vulnerable to an authorization bypass that grants authenticated users the ability to modify the environment configurations of other applications. By manipulating the project_env_id parameter, an attacker can link a foreign project's environment to their service, enabling malicious configurations, unauthorized build triggers, and deployment actions. This vulnerability can compromise the integrity and security of CI pipelines and deployment environments, posing significant risks to affected infrastructure.

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-2026-127078 - Proof of Concept

References

https://gist.github.com/neelkotnis/26f637bfda3513ab255d8f...
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:
Low
Integrity:
High
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
.