blogsafe.org My Downloads

BlogSafe.org

WordPress CVEs

Search and review WordPress-related vulnerability records.

← Back to CVE list

CVE-2026-13458

MEDIUM 6.4 CVSS 3.1
Published
August 1, 2026
Last modified
August 12, 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 GenerateBlocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Dynamic Tag Injection in HTML Attributes in all versions up to, and including, 2.3.0 due to insufficient input sanitization and output escaping. 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. A Contributor-level attacker can store the malicious payload by placing a dynamic tag such as {{post_meta key:...}} in a non-URL HTML attribute (e.g., title, aria-label, alt, or data-* attributes) of a GenerateBlocks element block, then setting the corresponding unprotected post meta key via the Custom Fields metabox to a value containing a closing quote and an injected event-handler attribute.

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

  • edge22 GenerateBlocks — Up to and including 2.3.0

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/dynamic-tags/class-register-dynamic-tag.php#L196
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/functions.php#L2145
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.2.1/includes/general.php#L689
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-dynamic-tag-callbacks.php#L388
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/dynamic-tags/class-register-dynamic-tag.php#L196
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/functions.php#L2145
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/generateblocks/tags/2.3.0/includes/general.php#L689
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3625942%40generateblocks&new=3625942%40generateblocks
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/402e10b4-84f0-4f93-a85c-037876d26e58?source=cve
  • nvd.nist.gov Official NVD record