Ultimate Product Catalog <= 4.4.48 - Authenticated (Contributor+) Arbitrary File Upload
Strategic Overview
- Status
- Patched in 5.0.0
- Affected Plugin
- Ultimate Product Catalog
- Affected Version
<= 4.4.48- CVSS
- 8.8High
- Weakness type
- CWE-434 · Unrestricted Upload of File with Dangerous Type
- CVE
CVE-2016-20075
At a glance
CVE-2016-20075 is a high-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Ultimate Product Catalog WordPress plugin, affecting versions <= 4.4.48. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account at Contributor level or above. The issue is fixed in version 5.0.0; sites on affected versions should update now. Disclosed June 2026, reported by Joaquin Ramirez Martinez.
Vulnerability Overview
The Ultimate Product Catalog plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in all versions up to, and including, 4.4.48. This makes it possible for authenticated attackers, with Contributor-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-434: Unrestricted Upload of File with Dangerous Type
Reaching this weakness in Ultimate Product Catalog <= 4.4.48 takes an account at Contributor level or above. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.
If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For Ultimate Product Catalog the fix is 5.0.0: builds <= 4.4.48 are affected, anything from 5.0.0 onward is not.
Remediation
Update to version 5.0.0, or a newer patched version
How does WordSec protect against this?
An attacker needs Contributor access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Ultimate Product Catalog 5.0.0 closes this, and updating the plugin is the step that ends it.
- Firewall
- Scanner
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Ultimate Product Catalog
- 9.8CVE-2017-12199: Ultimate Product Catalog <= 4.2.22 SQL Injection
CVE-2017-12199 - 9.8Ultimate Product Catalogue < 3.1.3 SQL Injection
- 8.8Ultimate Product Catalog <= 4.2.21 Authorization Bypass and CSRF
- 7.2Ultimate Product Catalog < 2.1.1 SQL Injection
- 6.5CVE-2021-24993: Ultimate Product Catalog – WordPress Catalog CSRF
CVE-2021-24993 - 6.1CVE-2017-12200: Ultimate Product Catalog <= 4.2.11 XSS
CVE-2017-12200 - 5.4Ultimate Product Catalog < 4.2.3 SQL Injection
- 4.4CVE-2023-2711: Ultimate Product Catalog <= 5.2.5 Stored XSS
CVE-2023-2711
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C