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CVE-2026-85679

HIGH 7.2 CVSS 3.1
Published
October 1, 2026
Last modified
October 3, 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 Extendify plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'styles.blocks' Block Type Key in all versions up to, and including, 3.1.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because registerIncoming() is hooked on rest_request_before_callbacks and runs before WordPress evaluates the route's permission_callback, meaning any unauthenticated POST, PUT, or PATCH request to a /wp/v2/global-styles route can trigger the vulnerable code path.

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

  • extendify Extendify — Up to and including 3.1.6

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/extendify/tags/3.1.6/app/Shared/Services/BlockStyleVariations.php#L29
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/extendify/tags/3.1.6/app/Shared/Services/BlockStyleVariations.php#L37
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/extendify/tags/3.1.6/app/Shared/Services/BlockStyleVariations.php#L62
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/extendify/tags/3.1.6/app/Shared/Services/BlockStyleVariations.php#L75
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/extendify/tags/3.1.6/bootstrap.php#L112
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3688833/extendify/trunk/app/Shared/Services/BlockStyleVariations.php
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&new=3688833%40extendify%2Ftags%2F3.2.0&old=3669317%40extendify%2Ftags%2F3.1.6
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/38024680-2d99-4af0-b805-6fd718a1d338?source=cve
  • nvd.nist.gov Official NVD record