Authorization Bypass in Linux Foundation Magma Host Middleware
CVE-2026-129357

5.3MEDIUM

Key Information:

Vendor

Linux
Status
Magma
Vendor
CVE Published:
15 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-129357?

A remote exploitation vulnerability exists in the Host Middleware of Linux Foundation Magma, specifically within the hostOrgMiddleware function. This issue arises from improper handling of the role argument, leading to a lack of necessary authorization checks. As a result, attackers could remotely exploit this vulnerability to gain unauthorized access to restricted functions. Despite early notification to the vendor prior to public disclosure, no response was received, increasing the urgency for users to secure their systems against potential exploits.

Affected Version(s)

Magma 1.0

Magma 1.1

Magma 1.2

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-2026-129357 - Proof of Concept

References

https://vuldb.com/vuln/437420
vdb-entrytechnical-description
https://vuldb.com/vuln/437420/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-129357
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
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

Aymen Benlamari
aymencdm (VulDB User)
aymencdm (VulDB User)
VulDB CNA Team
.