CVE-2026-6663
Received Received - Intake

Remote Code Execution in GWD Connect WordPress Plugin

Publication date: 2026-05-12

Last updated on: 2026-05-12

Assigner: Wordfence

Description
The GWD Connect plugin for WordPress is vulnerable to missing authorization to limited code execution in all versions up to, and including, 2.9. This is due to the plugin's standalone agent endpoints (gwd-backup.php and gwd-logs.php) not verifying authentication when the API key has not been configured, which is the default state. This makes it possible for unauthenticated attackers - on unregistered installations only, in certain environments - to execute arbitrary code on the server via the update_agent action, which writes attacker-supplied PHP code to the agent file.

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Meta Information

Published
2026-05-12
Last Modified
2026-05-12
Generated
2026-07-12
AI Q&A
2026-05-12
EPSS Evaluated
2026-07-10
NVD
CVE-2026-6663
EUVD
EUVD-2026-29405

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

The GWD Connect plugin for WordPress has a vulnerability in all versions up to and including 2.9 where certain standalone agent endpoints (gwd-backup.php and gwd-logs.php) do not verify authentication if the API key is not configured, which is the default setting.

This lack of authorization allows unauthenticated attackers, but only on unregistered installations and in certain environments, to execute arbitrary code on the server by using the update_agent action. This action writes attacker-supplied PHP code to the agent file, enabling limited code execution.

Impact Analysis

This vulnerability can allow unauthenticated attackers to execute arbitrary PHP code on the server hosting the vulnerable WordPress plugin.

Such code execution could lead to unauthorized changes, potential data compromise, or further exploitation of the server, although the impact is limited by the conditions that the installation must be unregistered and the environment must allow this behavior.

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