Critical CVSS 9.4

Overview

Glossword versions 1.8.8 through 1.8.12 contain an authenticated arbitrary file upload vulnerability. When deployed as a standalone application, the administrative interface (gw_admin.php) allows users with administrator privileges to upload files to the gw_temp/a/ directory. Due to insufficient validation of file type and path, attackers can upload and execute PHP payloads, resulting in remote code execution.

Risk analysis

This vulnerability is rated 🔴 CRITICAL.

  • CVSS: 9.4 (CRITICAL)
  • Detected tags: rce, upload (tag impact: VERY HIGH)

Recommended actions:

  • Patch/upgrade immediately (remote code execution).
  • Reduce exposure (WAF/segmentation), minimize attack surface.
  • Restrict types/MIME, store outside web root, inspect content.

Recommended tools

Tags