Authorization Bypass in OpenCSG CSGHub Affects File Security
CVE-2026-120426

8.7HIGH

Key Information:

Vendor

Opencsg

Status
Csghub
Vendor
CVE Published:
2 November 2026

What is CVE-2026-120426?

OpenCSG CSGHub version v2.6.0-ce contains a vulnerability that allows remote attackers to bypass authorization mechanisms through an unauthenticated file resolve route. This flaw enables attackers to manipulate the file path by injecting a percent-encoded current_user parameter. The portal subsequently forwards this manipulated request along with its server API key, granting unauthorized access to private repository files, including sensitive model, code, or space files. This exposure poses serious risks to the confidentiality and integrity of the data within these private repositories.

Affected Version(s)

CSGHub 0

References

https://github.com/OpenCSGs/csghub/issues/1586
issue-tracking
https://github.com/OpenCSGs/csghub/blob/v2.6.0-ce/interna...
technical-description
https://github.com/OpenCSGs/csghub/blob/v2.6.0-ce/interna...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

hieuPenguinnn
.