CVE-2026-3552 json
SurfLink < 2.6.0 - Missing Authorization to Authenticated (Subscriber+) 410 Gone URL Import via 'surfl_import_410' AJAX Action
published 3mo ago modified 3mo ago also EUVD-2026-43135
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- surflabtech SurfLink – Link Manager & Backup Restore 2.6.0
Is CVE-2026-3552 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- surflabtech SurfLink – Link Manager & Backup Restore
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/22e0060d-7852-4326-98bc-1c49bebe6205?source=cve
- plugins.trac.wordpress.org /browser/surflink/trunk/includes/class-surfl-410.php#L585
- plugins.trac.wordpress.org /browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L585
- plugins.trac.wordpress.org /browser/surflink/trunk/includes/class-surfl-410.php#L513
- plugins.trac.wordpress.org /browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L513
- plugins.trac.wordpress.org /browser/surflink/trunk/includes/class-surfl-410.php#L32
- plugins.trac.wordpress.org /browser/surflink/tags/2.4.1/includes/class-surfl-410.php#L32
- plugins.trac.wordpress.org /changeset?reponame=&old=3542304%40surflink&new=3542304%40surflink
Sources
- CVE List CVE-2026-3552
- NVD CVE-2026-3552
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.