thewebsitesupply GWD Conex Plugin up to 2.9 on WordPress gwd-backup.php update_agent authorization

Summaryinfo

A vulnerability classified as problematic has been found in thewebsitesupply GWD Conex Plugin up to 2.9 on WordPress. This issue affects the function update_agent of the file gwd-backup.php. Performing a manipulation results in authorization. This vulnerability is cataloged as CVE-2026-6663. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in thewebsitesupply GWD Conex Plugin up to 2.9 on WordPress. It has been classified as problematic. This affects the function update_agent of the file gwd-backup.php. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The weakness was shared by Athiwat Tiprasaharn. The advisory is shared at wordfence.com. This vulnerability is uniquely identified as CVE-2026-6663 since 04/20/2026. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/12/2026).

By approaching the search of inurl:gwd-backup.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• thewebsitesupply

Name

• GWD Conex Plugin

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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