Server-Side Request Forgery Vulnerability in Liufee FeehiCMS UEditor
CVE-2026-86240

5.1MEDIUM

Key Information:

Vendor

Liufee

Status
Feehicms
Vendor
CVE Published:
7 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86240?

A security flaw has been identified in Liufee FeehiCMS versions up to 2.1.1, specifically within the UEditor component's catchImage function located in backend/widgets/ueditor/Uploader.php. This vulnerability allows an attacker to manipulate the argument 'source[]', leading to server-side request forgery (SSRF). The vulnerability can be exploited remotely, posing significant risks to the server's integrity and confidentiality. Despite being reported early, the development team has yet to address this issue.

Affected Version(s)

FeehiCMS 2.1.0

FeehiCMS 2.1.1

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-2026-86240 - Proof of Concept

References

https://vuldb.com/vuln/399397
vdb-entrytechnical-description
https://vuldb.com/vuln/399397/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86240
third-party-advisory

CVSS V4

Score:
5.1
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

lyang (VulDB User)
VulDB CNA Team
.