What’s Vulnerable › Vulnerabilities

CVE-2026-6663: GWD Connect <= 2.9 - Unauthenticated Limited Code Execution via update_agent

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-12 · updated 2026-06-17
• Weakness: CWE-862

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.

Affected products

• thewebsitesupply GWD Conex: through 2.9

References

• https://plugins.trac.wordpress.org/browser/graphic-web-design-inc/tags/2.9/gwd-backup.php?marks=1991,2002,2548#L1991
• https://plugins.trac.wordpress.org/browser/graphic-web-design-inc/tags/2.9/gwd-logs.php?marks=398,403,851#L398
• https://www.wordfence.com/threat-intel/vulnerabilities/id/4d2d435f-d6ce-41bd-8a45-e252fb4ba419?source=cve

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