Server-Side Request Forgery in Fengoffice File Handler Component
CVE-2026-124500

5.3MEDIUM

Key Information:

Vendor

Fengoffice

Status
Feng Office
Vendor
CVE Published:
8 November 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-124500?

A security flaw in Fengoffice’s File Handler component allows for server-side request forgery through the upload_document_image function. This vulnerability affects specific versions of Feng Office, enabling attackers to manipulate the 'url' argument. The issue can be exploited remotely, posing significant risks to data integrity and system security. Despite early notifications to the vendor regarding the vulnerability, no response was received. It is crucial for users of the affected versions to apply available security patches and implement necessary precautions to mitigate potential exploitation.

Affected Version(s)

Feng Office 3.11.13.0

Feng Office 3.11.13.1

Feng Office 3.11.13.2

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-2026-124500 - Proof of Concept

References

https://vuldb.com/vuln/432805
vdb-entrytechnical-description
https://vuldb.com/vuln/432805/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-124500
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

1marsh1 (VulDB User)
VulDB CNA Team
.