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CVE-2026-75017

MEDIUM 4.3 CVSS 3.1
Published
September 18, 2026
Last modified
September 18, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

The Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.8.6. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with contributor-level access and above, to demote administrator-owned published builder templates (header, footer, front page, single, archive, 404, and search) to draft status and replace them with attacker-authored block content rendered site-wide, enabling defacement, phishing, and SEO spam. This is possible because the mzb-builder-template post type is registered with capability_type='post' and exposed via the REST API, and the _mzb_template meta key is accessible to any user with edit_posts capability, meaning Contributor-level users and above can trigger the vulnerable save_post() hook.

Affected WordPress components

  • Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid Plugin · magazine-blocks
    Possible match Active
    Up to and including 1.8.6
    View on WordPress.org
  • Magazine Blocks Theme · magazine-blocks
    Possible match Active
    Up to and including 1.8.6
    View on WordPress.org

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

  • wpblockart Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post Grid — Up to and including 1.8.6

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/MagazineBlocks.php#L98
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/PostTypes/SiteBuilder.php#L116
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/PostTypes/SiteBuilder.php#L138
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/PostTypes/SiteBuilder.php#L56
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3656574%40magazine-blocks&new=3656574%40magazine-blocks
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/7f66d26a-8eb7-4b29-bb7f-afdd762be4b2?source=cve
  • nvd.nist.gov Official NVD record