CVE-2026-39755
Received Received - Intake

Subscriber Arbitrary File Upload in WP Duplicate

Vulnerability report for CVE-2026-39755, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: Patchstack

Description

Subscriber Arbitrary File Upload in WP Duplicate <= 1.1.11 versions.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-06
AI Q&A
2026-10-06
EPSS Evaluated
N/A
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
revmakx WP Duplicate n/a

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-434 The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

Attack-Flow Graph

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Executive Summary

This vulnerability is an Arbitrary File Upload flaw in the WordPress WP Duplicate Plugin versions 1.1.11 and below. It allows attackers with Subscriber-level access to upload malicious files to the server, potentially leading to full system compromise.

Detection Guidance

Check for unauthorized file uploads in WordPress directories, particularly in the wp-content/uploads folder. Look for unexpected PHP or executable files. Monitor server logs for POST requests to /wp-admin/admin-ajax.php with suspicious parameters.

Impact Analysis

Attackers could exploit this to upload malicious files, gaining control over the website or server. This could lead to data theft, defacement, or further attacks on visitors. The high CVSS score (9.9) indicates severe impact.

Compliance Impact

This vulnerability could lead to unauthorized access and data breaches, violating GDPR and HIPAA requirements for data protection and security. Non-compliance may result in legal penalties and reputational damage.

Mitigation Strategies

Immediately restrict Subscriber-level user permissions to prevent file uploads. Apply Patchstack's emergency mitigation rule if available. Consider disabling the WP Duplicate plugin until an official patch is released. Monitor for signs of exploitation and update the plugin as soon as a fix is provided.

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EPSS Chart