CVE-2026-66627
Received Received - Intake

Arbitrary File Upload in GP Premium Plugin

Publication date: 2026-08-18

Last updated on: 2026-08-18

Assigner: Patchstack

Description
Contributor Arbitrary File Upload in GP Premium <= 2.5.5 versions.

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Meta Information

Published
2026-08-18
Last Modified
2026-08-18
Generated
2026-08-18
AI Q&A
2026-08-18
EPSS Evaluated
N/A
NVD
CVE-2026-66627
EUVD
EUVD-2026-60916

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
patchstack gp_premium to 2.5.5 (inc)

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.

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Executive Summary

This vulnerability is an Arbitrary File Upload flaw in the GP Premium WordPress plugin versions 2.5.5 and below. Attackers can exploit it to upload malicious files, such as backdoors, to a website. This could allow unauthorized access to the site.

Detection Guidance

Check if the GP Premium plugin version is 2.5.5 or below. Look for unexpected file uploads in WordPress directories, especially in uploads folders. Monitor for unusual network traffic or unauthorized file modifications.

Impact Analysis

Exploitation could lead to unauthorized access to your website, allowing attackers to take control, steal data, or deface the site. It may also be used in mass-exploit campaigns affecting many websites.

Mitigation Strategies

Update the GP Premium plugin to version 2.5.6 or later immediately. If updating is not possible, apply the mitigation rule provided by Patchstack to block attacks until the update is applied.

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