Unrestricted File Upload in BoyunCMS by Boyun
CVE-2025-7100

5.3MEDIUM

Key Information:

Vendor

Boyun

Status
Boyuncms
Vendor
CVE Published:
7 July 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-7100?

A vulnerability exists in BoyunCMS up to version 1.4.20 due to improper handling of the image argument in the /application/user/controller/Index.php file. This flaw leads to unrestricted file uploads, allowing remote attackers to upload malicious files to the server. The publicly disclosed exploit significantly increases the risk for systems running vulnerable versions, as it provides attackers with the ability to execute arbitrary code or compromise the integrity of the system.

Affected Version(s)

BoyunCMS 1.4.0

BoyunCMS 1.4.1

BoyunCMS 1.4.2

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-2025-7100 - Proof of Concept

References

https://vuldb.com/?id.315014
vdb-entrytechnical-description
https://vuldb.com/?ctiid.315014
signaturepermissions-required
https://vuldb.com/?submit.604455
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

.