Ultimate Product Catalog: Dangerous file upload

Ultimate Product Catalog is affected by dangerous file upload. Exploitation requires an authenticated contributor account. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise. The published affected range is 3.8.6.

CVE / CNA score 8.7 CVSS 4.0 · disclosure@vulncheck.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Ultimate Product Catalog
Plugin slug: ultimate-product-catalog
Affected: 3.8.6
Safe version: See mitigation notes
Published: Jun 15, 2026
Weakness: CWE-863 — Incorrect Authorization

This CVE was published Jun 15, 2026 and is one of 5 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update Ultimate Product Catalog when a confirmed fixed release becomes available; until then, disable and remove it when the site's risk warrants.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

WordPress Ultimate Product Catalog 3.8.6 contains an arbitrary file upload vulnerability that allows authenticated users with contributor, editor, author, or administrator roles to upload malicious files by exploiting the custom fields functionality. Attackers can upload PHP shells through the Products tab custom file field and access them via the upcp-product-file-uploads directory to execute arbitrary code on the server.

CVE / CNA vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

Vulnerability data licensing

CVE. Copyright © 1999–2026, The MITRE Corporation. MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

CWE. Copyright © 2006–2026, The MITRE Corporation. CWE™ is free to use by any organization or individual for any research, development, and/or commercial purposes, per these CWE Terms of Use. Accordingly, The MITRE Corporation hereby grants you a non-exclusive, royalty-free license to use CWE for research, development, and commercial purposes. Any copy you make for such purposes is authorized on the condition that you reproduce MITRE’s copyright designation and this license in any such copy.

CVSS. CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and used by permission.

Source-record text is CVE/CNA content delivered through the NVD API. Fused summaries and remediation guidance are independently authored and are not attributed to NVD.

All other copyrights and trademarks are the property of their respective owners.

Full data sources, terms, and disclaimers