Critical CVSS 9.3

Overview

Project Pier 0.8.8 and earlier contains an unauthenticated arbitrary file upload vulnerability in tools/upload_file.php. The upload handler fails to validate the file type or enforce authentication, allowing remote attackers to upload malicious PHP files directly into a web-accessible directory. The uploaded file is stored with a predictable suffix and can be executed by requesting its URL, resulting in remote code execution.

Risk analysis

This vulnerability is rated 🔴 CRITICAL.

  • CVSS: 9.3 (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.

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