Vulnerability · Published Apr 8, 2026 · Assigned by Wordfence
CVE-2026-2942ProSolution WP Client <= 1.9.9 - Unauthenticated Arbitrary File Upload via proSol_fileUploadProcess
Critical 9.8
In plain English
A critical-severity unrestricted file upload in ProSolution WP Client from prosolution. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 49% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| prosolution | ProSolution WP Client | 0 – through 1.9.9 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/3852aef6-42e7-4b71-a1ba-dd41284fd07b?source=cve
- https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/public/class-prosolwpclient-public.php?rev=3331282#L993
- https://plugins.trac.wordpress.org/changeset/3484577/prosolution-wp-client