Path Traversal Vulnerability in thinkgem JeeSite Software
CVE-2026-3405

2.3LOW

Key Information:

Vendor

Thinkgem

Status
Jeesite
Vendor
CVE Published:
2 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-3405?

A security flaw has been identified in the thinkgem JeeSite software, specifically in the Connection Handler component. This vulnerability allows for path traversal attacks, potentially compromising system integrity by enabling unauthorized access to files outside the intended directory structure. The vulnerability can be exploited remotely, showcasing the necessity for prompt remediation. To date, attempts to notify the vendor about the issue have gone unanswered, increasing the urgency for users to review their security protocols.

Affected Version(s)

JeeSite 5.15.0

JeeSite 5.15.1

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-2026-3405 - Proof of Concept

References

https://vuldb.com/?id.348300
vdb-entry
https://vuldb.com/?ctiid.348300
signaturepermissions-required
https://vuldb.com/?submit.765097
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Saul1213 (VulDB User)
VulDB
.