CVE-2026-3552
MediumCVSS 4.3Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
The SurfLink - Ultimate Link Manager plugin for WordPress up to version 2.6.0 has a vulnerability in the ajax_import_410() function, allowing authenticated attackers with Subscriber-level access to import arbitrary URLs into the 410 Gone database table. It lacks a capability check (current_user_can()) and nonce verification (check_ajax_referer()), while other AJAX handlers in the same class are properly secured.
Risk Assessment
An attacker can inject fake 410 entries, causing the site to return HTTP 410 Gone responses for legitimate pages, resulting in denial of service for visitors and SEO damage due to search engine delisting.
Recommendation
Immediately update the SurfLink - Ultimate Link Manager plugin to the latest available version that fixes this vulnerability. If no update is available, temporarily disable the plugin or restrict access to the surfl_import_410 AJAX action to administrators only.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

