CVE-2026-86666: Unrestricted Upload in aircheng-org iWebShop-5
Description
A security flaw has been discovered in aircheng-org iWebShop-5 up to 5.15. Impacted is the function upload_json/uploadFile of the file controllers/pic.php. The manipulation results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
CVSS v4.0
Score 6.9medium
Affected software
aircheng-org
iWebShop-5
pkg:github/aircheng-org/iWebShop-5cpe:2.3:a:aircheng-org:iwebshop-5:*:*:*:*:*:*:*:*Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-86666 affects aircheng-org iWebShop-5 versions 5.0 through 5.15. It is caused by insufficient validation in the upload_json/uploadFile function of controllers/pic.php, resulting in unrestricted file upload capability. This flaw can be exploited remotely to upload arbitrary files. The issue was reported to the project early, but no fix or response has been provided. Public exploit code exists, increasing the risk of exploitation.
Potential Impact
Successful exploitation allows remote attackers to upload arbitrary files to the affected system, potentially leading to unauthorized code execution or system compromise. The CVSS 4.0 base score is 6.9 (medium), reflecting network attack vector, low complexity, no privileges or user interaction required, and low to limited impact on confidentiality, integrity, and availability.
Mitigation Recommendations
No official fix or patch has been released by the vendor. Users should monitor the vendor's advisories for updates. Until a patch is available, consider restricting access to the upload functionality or implementing additional file upload validation controls as a temporary mitigation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-09-08T09:30:36.740Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa032dbacd9273b49e3e66c
Added to database: 09/08/2026, 16:07:55 UTC
Last enriched: 09/16/2026, 01:55:14 UTC
Last updated: 10/22/2026, 13:15:24 UTC
Views: 89
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