SurfLink < 2.6.0 - Missing Authorization to Authenticated (Subscriber+) 410 Gone URL Import via 'surfl_import_410' AJAX Action

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Summary

CVECVE-2026-3552
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-11 05:16:33 UTC
Updated2026-07-11 05:16:33 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Surflabtech SurfLink Link Manager Backup Restore affected 2.6.0 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/22e0060d-7852-4326-98bc-1c49b... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/surflink/trunk/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/surflink/tags/2.4.1/includes/class-surfl-410.php [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Kazuma Matsumoto (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-07-10T15:30:12.000ZDisclosed
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