Unrestricted File Upload Vulnerability in Kuangstudy KuangSimpleBBS
CVE-2025-3830

5.3MEDIUM

Key Information:

Vendor
Kuangstudy
Status
Kuangsimplebbs
Vendor
CVE Published:
20 April 2025

Badges

👾 Exploit Exists🟡 Public PoC

Summary

An unrestricted file upload vulnerability exists in the Kuangstudy KuangSimpleBBS 1.0 software, specifically in the fileUpload function of the QuestionController.java file. This flaw allows attackers to upload potentially malicious files by manipulating the editormd-image-file argument. Such an exploit can be executed remotely, posing a significant security risk. Public disclosure of the vulnerability has occurred, increasing the urgency for users to address the issue to prevent exploitation.

Affected Version(s)

KuangSimpleBBS 1.0

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-2025-3830 - Proof of Concept

References

https://vuldb.com/?id.305737
vdb-entrytechnical-description
https://vuldb.com/?ctiid.305737
signaturepermissions-required
https://vuldb.com/?submit.556133
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

Caigo (VulDB User)
.