ProSolution WP Client <= 2.0.8 - Unauthenticated Arbitrary File Deletion via 'newfilename' and 'filename' Parameters

9.1
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE CVE-2026-14524
CVSS 9.1 (Critical)
Publicly Published August 15, 2026
Last Updated August 16, 2026
Researcher CHOIGYEONGMIN

Description

The ProSolution WP Client plugin for WordPress is vulnerable to arbitrary file deletion due to insufficient file path validation in the proSol_fileDeleteProcess function in all versions up to, and including, 2.0.8. This makes it possible for unauthenticated attackers to delete arbitrary files on the server, which can easily lead to remote code execution when the right file is deleted (such as wp-config.php). An attacker must first call the proSol_fileUploadModalProcess handler to poison their own session with a path-traversal key, then call proSol_fileDeleteProcess with that key as the filename parameter; both steps require only the publicly exposed frontend nonce.

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Vulnerability Details for ProSolution WP Client

Software Type Plugin
Software Slug prosolution-wp-client (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.0.9, or a newer patched version
Affected Version
  • <= 2.0.8
Patched Version
  • 2.0.9

Recent vulnerabilities in ProSolution WP Client

# Title CVE ID CVSS Researchers Date
1 ProSolution WP Client < 2.0.11 - Reflected Cross-Site Scripting CVE-2026-19056 6.1 Erwan LR August 17, 2026
2 ProSolution WP Client < 2.0.11 - Reflected Cross-Site Scripting CVE-2026-19055 6.1 Nir Yehoshua August 17, 2026
3 ProSolution WP Client <= 2.0.10 - Unauthenticated Arbitrary File Upload via Content-Disposition Header Filename Override CVE-2026-16098 9.8 Nir Yehoshua August 15, 2026
4 ProSolution WP Client <= 2.0.8 - Missing Authorization CVE-2026-19052 4.3 Nir Yehoshua August 10, 2026
5 ProSolution WP Client <= 2.0.8 - Authenticated (Subscriber+) Server-Side Request Forgery CVE-2026-19050 6.4 Nir Yehoshua August 10, 2026
6 ProSolution WP Client <= 2.0.8 - Unauthenticated SQL Injection CVE-2026-19049 7.5 Nir Yehoshua August 6, 2026
7 ProSolution WP Client <= 2.0.5 - Unauthenticated SQL Injection CVE-2026-19053 7.5 Pablo González Pérez, Francisco José Ramírez Vicente, and Iñigo Sánchez Enciso August 6, 2026
8 ProSolution WP Client <= 2.0.0 - Unauthenticated Arbitrary File Upload via 'files' CVE-2026-6555 9.8 snr May 19, 2026
9 ProSolution WP Client <= 1.9.9 - Unauthenticated Arbitrary File Upload via proSol_fileUploadProcess CVE-2026-2942 9.8 Nabil Irawan April 8, 2026

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