An issue was discovered in JABA XPress Online Shop through 2018-09-14. It contains an arbitrary file upload vulnerability in the picture-upload feature of ProductEdit.aspx. An authenticated attacker may bypass the frontend filename validation and upload an arbitrary file via FileUploader.aspx.cs in FileUploader.aspx by using empty w and h parameters. This file may contain arbitrary aspx code that may be executed by accessing /Jec/ProductImages/<number>/<filename>. Accessing the file once uploaded does not require authentication.
Severity
CVSS 3.1
8.8 high
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)