Path Traversal Vulnerability in admin3 Product by CJBI
CVE-2026-92919

7.2HIGH

Key Information:

Vendor

Cjbi

Status
Admin3
Vendor
CVE Published:
17 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-92919?

The admin3 product, through version 3.0.0, is susceptible to a path traversal vulnerability that allows authenticated users to exploit unsanitized client-supplied filenames within the upload handler. On Windows deployments, this weakness enables attackers to use dot-dot path segments to navigate outside the designated storage directory, granting them the ability to overwrite files that are otherwise accessible to server processes. This misconfiguration poses a significant risk, as it compromises the integrity of the filesystem and can lead to unauthorized data manipulation.

Affected Version(s)

admin3 0 <= 3.0.0

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-2026-92919 - Proof of Concept

References

https://github.com/LinYuanyi1/cve-request-poc/blob/master...
exploit
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/s...
technical-description
https://github.com/cjbi/admin3/blob/3.0.0/admin3-server/s...
technical-description

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
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

Mingsheng Lin
.