Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framewor
- https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.9/framewor
- https://plugins.trac.wordpress.org/changeset/3360000/blocksy-companion/trunk/fra
- https://wordpress.org/plugins/blocksy-companion/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c28e740e-9337-41b5-a8e
FAQ
What is CVE-2025-9565?
CVE-2025-9565 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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 insu...
How severe is CVE-2025-9565?
CVE-2025-9565 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-9565?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.