CVE-2026-16098
ProSolution WP Client <= 2.0.10 - Unauthenticated Arbitrary File Upload via Content-Disposition Header Filename Override
Description
The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.0.10 via the proSol_handleFileUpload function. This is due to missing validation of the attacker-controlled Content-Disposition header filename, which overrides the allow-listed multipart filename before the file is saved, and a post-save extension check that fails to delete the already-written file. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The nonce required to reach the upload handler is publicly exposed via wp_localize_script on any front-end page rendering the job portal shortcode, allowing unauthenticated visitors to obtain a valid nonce and bypass that gating check entirely.
INFO
Published Date :
Aug. 16, 2026, 5:16 a.m.
Last Modified :
Aug. 16, 2026, 5:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-16098
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update the ProSolution WP Client plugin.
- Validate file uploads on the server-side.
- Sanitize file names and extensions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-16098.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-16098 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-16098
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-16098 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-16098 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by [email protected]
Aug. 16, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'prosolution', 'product': 'ProSolution WP Client', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '2.0.10'}], 'defaultStatus': 'unaffected'}] Added Description The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.0.10 via the proSol_handleFileUpload function. This is due to missing validation of the attacker-controlled Content-Disposition header filename, which overrides the allow-listed multipart filename before the file is saved, and a post-save extension check that fails to delete the already-written file. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. The nonce required to reach the upload handler is publicly exposed via wp_localize_script on any front-end page rendering the job portal shortcode, allowing unauthenticated visitors to obtain a valid nonce and bypass that gating check entirely. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-434 Added Reference https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/class-prosolwpclient.php#L254 Added Reference https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/UploadHandler.php#L1090 Added Reference https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/UploadHandler.php#L1327 Added Reference https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/public/class-prosolwpclient-public.php#L1033 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3644463%40prosolution-wp-client&new=3644463%40prosolution-wp-client Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/3c4a7aef-09ec-4d17-87d6-f507d64e0afa?source=cve