CVE-2026-3552 Missing authorization in SurfLink – Link Manager & Backup Restore
Authenticated subscribers can import arbitrary URLs to trigger 410 Gone responses, causing denial of service and SEO damage due to missing authorization checks.
- 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-2026-3552?
CVE-2026-3552 is a medium-severity missing authorization vulnerability in surflabtech SurfLink – Link Manager & Backup Restore, published on 11 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The SurfLink - Ultimate Link Manager plugin for WordPress is vulnerable to unauthorized data modification due to a missing capability check on the ajax_import_410() function in all versions up to 2.6.0. This is due to a missing capability check (current_user_can()) and missing nonce verification (check_ajax_referer()) in the ajax_import_410() function, while all other AJAX handlers in the same class (ajax_add_single_410, ajax_save_editted_410, ajax_delete_410, ajax_bulk_410_delete, ajax_empty_410, ajax_export_410) properly implement both authorization and nonce checks. This makes it possible for authenticated attackers, with Subscriber-level access and above, to import arbitrary URLs into the 410 Gone database table via the surfl_import_410 AJAX action. Injected URLs will cause the site to return HTTP 410 Gone responses to all visitors accessing those paths, potentially causing denial of service for legitimate pages and SEO damage through search engine delisting.
Weakness: CWE-862
Which versions are affected by CVE-2026-3552?
How do I fix CVE-2026-3552?
No fix has been published for CVE-2026-3552 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-3552 being exploited?
There is no known exploitation of CVE-2026-3552 in the wild and no public exploit code.
Sources
Also known as GHSA-vgw6-5938-gvqv.