ProSolution WP Client <= 2.0.0 - Unauthenticated Arbitrary File Upload via 'files'
| CVE | CVE-2026-6555 |
|---|---|
| CVSS | 9.8 (Critical) |
| Publicly Published | May 19, 2026 |
| Last Updated | June 23, 2026 |
| Researcher |
snr
|
Description
The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 2.0.0. This is due to an array validation mismatch where only the first file in the upload array undergoes extension and MIME type validation, while all files are processed and uploaded to a web-accessible directory. This makes it possible for unauthenticated attackers to upload malicious PHP files and achieve remote code execution by sending a valid first file followed by a malicious file.
Learn more about Arbitrary File Upload vulnerabilities and how to prevent them.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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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 2.0.1, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in ProSolution WP Client
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