CVE-2026-16098: ProSolution WP Client · Unrestricted File Upload
Affects ProSolution WP ClientSource CVE Database V5
Not known to be exploited · CVSS 9.8 Critical.
Data as of 13 Nov 2026, 23:53 UTC
- EPSS
- 1.1% chance of exploitation in 30 days – higher than 68% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 16 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| prosolutionProSolution WP Client | Affected
| Fixed in– |
AI-suggested
Until an official fix is available, restrict access to the affected upload functionality and consider disabling the ProSolution WP Client plugin if possible. Monitor vendor channels for updates and apply patches promptly once released.
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.
References
- wordfence.com/threat-intel/vulnerabilities/id/3c4a7aef-09ec-4d17-87d6-f507d64e0afa?source=cve (opens in a new tab)
- plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/UploadHandler.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/UploadHandler.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/public/class-prosolwpclient-public.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.6/includes/class-prosolwpclient.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset?reponame=&old=3644463%40prosolution-wp-client&new=3644463%40prosolution-wp-client (opens in a new tab)