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CVE-2025-9565

MEDIUM 6.4 CVSS 3.1
Published
September 17, 2025
Last modified
June 17, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's blocksy_newsletter_subscribe shortcode in all versions up to, and including, 2.1.10 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected WordPress components

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

  • creativethemeshq Blocksy Companion — Up to and including 2.1.10

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framework/extensions/newsletter-subscribe/extension.php#L191
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framework/extensions/newsletter-subscribe/helpers.php#L65
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3360000/blocksy-companion/trunk/framework/extensions/newsletter-subscribe/helpers.php
  • wordpress.org https://wordpress.org/plugins/blocksy-companion/
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c28e740e-9337-41b5-a8e7-ca68e41eaed4?source=cve
  • nvd.nist.gov Official NVD record