surflabtech SurfLink Plugin up to 2.5.x on WordPress AJAX class.surflink-ajax.php ajax_import_410 urls improper authorization

Summaryinfo

A vulnerability classified as problematic has been found in surflabtech SurfLink Plugin up to 2.5.x. The impacted element is the function ajax_import_410 of the file class.surflink-ajax.php of the component AJAX Handler. The manipulation of the argument urls leads to improper authorization. This vulnerability is uniquely identified as CVE-2026-3552. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in surflabtech SurfLink Plugin up to 2.5.x. It has been rated as problematic. This issue affects the function ajax_import_410 of the file class.surflink-ajax.php of the component AJAX Handler. The manipulation of the argument urls with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is integrity, and availability. The summary by CVE is:

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.

It is possible to read the advisory at wordfence.com. The identification of this vulnerability is CVE-2026-3552 since 03/04/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

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

Upgrading to version 2.6.0 eliminates this vulnerability.

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Productinfo

Type

• WordPress Plugin

Vendor

• surflabtech

Name

• SurfLink Plugin

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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