Path Traversal Vulnerability in RainyGao DocSys Document Controller
CVE-2026-105157

5.3MEDIUM

Key Information:

Vendor

Rainygao

Status
Docsys
Vendor
CVE Published:
4 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-105157?

A vulnerability has been identified in RainyGao's DocSys up to version 2.02.85, specifically in the function DocController.doGetTmp of the file /Doc/doGetTmpFile.do. This flaw allows an attacker to manipulate the argument path/fileName, leading to a path traversal attack. If successfully exploited, it could allow unauthorized access to sensitive files on the server. Although the issue was reported early on by a user, the vendor has yet to respond or issue a fix. Public disclosure of the exploit raises concerns for those using the affected version.

Affected Version(s)

DocSys 2.02.0

DocSys 2.02.1

DocSys 2.02.2

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-2026-105157 - Proof of Concept

References

https://vuldb.com/vuln/413376
vdb-entrytechnical-description
https://vuldb.com/vuln/413376/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-105157
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
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

CyanM0un (VulDB User)
VulDB CNA Team
.