EUVD-2026-31016
GHSA-pwg9-vp4w-mc97
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
Unauthenticated remote code execution in the ProSolution WP Client WordPress plugin (versions ≤ 2.0.0) allows attackers to upload malicious PHP files to a web-accessible directory by abusing an array validation mismatch in its upload handler. Because only the first file in a multi-file upload array is checked for extension and MIME type while the remaining files are processed unchecked, attackers can pair a benign first file with a PHP webshell to achieve full code execution on the host. …
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RemediationAI
Within 24 hours: Identify all WordPress installations running ProSolution WP Client plugin version 2.0.0 or earlier; disable and remove the plugin from all instances immediately. Within 7 days: Confirm plugin removal across all inventory; scan web-accessible directories and application logs for evidence of unauthorized PHP file uploads or suspicious execution. …
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External POC / Exploit Code
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