CVE-2026-12430

EUVD-2026-37989
The Blocksy Companion plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.1.45 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with editor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.4 MEDIUM
NETWORK
HIGH
HIGH
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Awaiting analysis
This vulnerability is currently awaiting analysis.
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Common Weakness Enumeration
References
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.41/framework/extensions/product-reviews/extension.php#L709
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.41/framework/extensions/product-reviews/views/single-top.php#L206
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.41/framework/extensions/product-reviews/views/single-top.php#L232
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.45/framework/extensions/product-reviews/extension.php#L709
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.45/framework/extensions/product-reviews/views/single-top.php#L206
https://plugins.trac.wordpress.org/browser/blocksy-companion/tags/2.1.45/framework/extensions/product-reviews/views/single-top.php#L232
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3576066%40blocksy-companion&new=3576066%40blocksy-companion&sfp_email=&sfph_mail=
https://www.wordfence.com/threat-intel/vulnerabilities/id/fac4ae61-cfc6-4efc-9f57-58fa39e00f07?source=cve