CVE-2026-4328 Server-side request forgery in Advanced Import
Authenticated attackers can exploit SSRF in the Advanced Import plugin to access internal services and cloud metadata via the demo_file parameter.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4328?
CVE-2026-4328 is a medium-severity server-side request forgery vulnerability in addonspress Advanced Import, published on 19 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Advanced Import plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.4.6. This is due to the plugin using wp_remote_get() to fetch a user-supplied URL without validating that the URL does not point to internal or private network resources in the demo_download_and_unzip() function. The 'demo_file' parameter from $_POST is passed through sanitize_text_field() (which only handles XSS-related sanitization) and then directly into wp_remote_get() when 'demo_file_type' is set to 'url'. Notably, the plugin uses wp_safe_remote_get() in other locations (theme template libraries) which would provide SSRF protection, but fails to use it in this critical AJAX handler. This makes it possible for authenticated attackers, with Author-level access and above (upload_files capability), to make web requests to arbitrary locations originating from the web application, which can be used to query and view data from internal services, including cloud instance metadata endpoints.
Weakness: CWE-918
Which versions are affected by CVE-2026-4328?
How do I fix CVE-2026-4328?
No fix has been published for CVE-2026-4328 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-4328 being exploited?
There is no known exploitation of CVE-2026-4328 in the wild and no public exploit code.
Sources
Also known as GHSA-qvcr-v37j-859c.