Unrestricted File Upload Vulnerability in aircheng-org iWebShop-5
CVE-2026-86666

6.9MEDIUM

Key Information:

Vendor

Aircheng-org

Status
Iwebshop-5
Vendor
CVE Published:
8 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-86666?

A security flaw is present in the aircheng-org iWebShop-5 versions up to 5.15, particularly affecting the upload_json/uploadFile function in controllers/pic.php. This vulnerability allows for unrestricted file uploads, enabling attackers to upload malicious files remotely. Despite being made aware of the issue through an early report, the project has not yet provided a response or a patch, leaving users at risk of potential exploitation. It is critical for users to assess their systems and implement necessary security measures.

Affected Version(s)

iWebShop-5 5.0

iWebShop-5 5.1

iWebShop-5 5.2

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-2026-86666 - Proof of Concept

References

https://vuldb.com/vuln/399757
vdb-entrytechnical-description
https://vuldb.com/vuln/399757/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-86666
third-party-advisory

CVSS V4

Score:
6.9
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

yunshen (VulDB User)
VulDB CNA Team
.