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CVE-2026-102562

HIGH 7.2 CVSS 3.1
Published
October 13, 2026
Last modified
October 15, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Description

The AcyMailing plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the customField[] parameter of the public frontusers::subscribe endpoint in versions up to, and including, 11.1.0. This is due to insufficient input sanitization and output escaping in the acym_cleanVar() sanitizer, whose HTML-tag stripper only matches complete tags (requiring a closing '>'), together with SubscriberInsertion::replaceUserInformation() and the archive view template, which substitute the stored subscriber field value into the mail body and emit it without HTML encoding. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses the online-archive URL for the poisoned subscriber, including administrators who click the plugin-generated link in the Subscribers → History screen.

Affected WordPress components

  • AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress Plugin · acymailing
    Confirmed match Active
    Up to and including 11.1.0
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • acyba AcyMailing – An Ultimate Newsletter Plugin and Marketing Automation Solution for WordPress — Up to and including 11.1.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/FieldClass.php#L292
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Classes/UserClass.php#L1187
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/Core/wordpress/security.php#L122
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/back/dynamics/subscriber/SubscriberInsertion.php#L159
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontControllers/FrontusersController.php#L69
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/acymailing/tags/11.1.0/front/FrontViews/Archive/tmpl/view.php#L17
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3729031%40acymailing&new=3729031%40acymailing
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/eb8f03fb-d1af-4727-87d7-58dbe4013d8a?source=cve
  • nvd.nist.gov Official NVD record