ProSolution WP Client <= 1.9.9 - Unauthenticated Arbitrary File Upload via proSol_fileUploadProcess

9.8
Unrestricted Upload of File with Dangerous Type
CVE CVE-2026-2942
CVSS 9.8 (Critical)
Publicly Published April 8, 2026
Last Updated April 8, 2026
Researcher Nabil Irawan - Heroes Cyber Security

Description

The ProSolution WP Client plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'proSol_fileUploadProcess' function in all versions up to, and including, 1.9.9. This makes it possible for unauthenticated attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.

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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 2.0.0, or a newer patched version
Affected Version
  • <= 1.9.9
Patched Version
  • 2.0.0

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 - Unauthenticated Arbitrary File Deletion via 'newfilename' and 'filename' Parameters CVE-2026-14524 9.1 CHOIGYEONGMIN August 15, 2026
5 ProSolution WP Client <= 2.0.8 - Missing Authorization CVE-2026-19052 4.3 Nir Yehoshua August 10, 2026
6 ProSolution WP Client <= 2.0.8 - Authenticated (Subscriber+) Server-Side Request Forgery CVE-2026-19050 6.4 Nir Yehoshua August 10, 2026
7 ProSolution WP Client <= 2.0.8 - Unauthenticated SQL Injection CVE-2026-19049 7.5 Nir Yehoshua August 6, 2026
8 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
9 ProSolution WP Client <= 2.0.0 - Unauthenticated Arbitrary File Upload via 'files' CVE-2026-6555 9.8 snr May 19, 2026

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