CVE-2025-9565
Blocksy Companion <= 2.1.10 - Authenticated (Contributor+) Stored Cross-Site Scripting via blocksy_newsletter_subscribe Shortcode
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-79 |
| Vendor | creativethemeshq |
| Product | blocksy companion |
| Published | Sep 17, 2025 |
| Last Updated | Apr 8, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
creativethemeshq / Blocksy Companion
0 ≤ 2.1.10
References
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/c28e740e-9337-41b5-a8e7-ca68e41eaed4?source=cve 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 wordpress.org: https://wordpress.org/plugins/blocksy-companion/ plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/changeset/3360000/blocksy-companion/trunk/framework/extensions/newsletter-subscribe/helpers.php
Credits
Muhammad Yudha - DJ