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CVE-2026-101920

HIGH 7.2 CVSS 3.1
Published
October 10, 2026
Last modified
October 13, 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 Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'comment (href attribute inside comment content)' parameter in all versions up to, and including, 5.2.12 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 exploitable in the free build because the plugin's author-filter rewriter never appends the ?m_bm=true marker to its own anchors (Plugin::has_pro() returns false), meaning every href the byline script selects and rewrites is fully attacker-controlled.

Affected WordPress components

  • Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress Plugin · molongui-authorship
    Confirmed match Active
    Up to and including 5.2.12
    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

  • molongui Molongui Authorship – Author Boxes, Guest Authors & Co-Authors for WordPress — Up to and including 5.2.12

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/molongui-authorship/tags/5.2.12/assets/js/byline.4cc4.min.js
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/molongui-authorship/tags/5.2.12/includes/author-filters.php#L29
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/molongui-authorship/tags/5.2.12/includes/author-filters.php#L464
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/molongui-authorship/tags/5.3.0/assets/js/byline.849a.min.js
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/1bf63dd3-9fd1-4b72-b7e0-48155312c48f?source=cve
  • nvd.nist.gov Official NVD record