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CVE-2026-12157

MEDIUM 6.4 CVSS 3.1
Published
June 19, 2026
Last modified
June 22, 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 BetterDocs - Knowledge Base Docs & FAQ Solution for Elementor & Block Editor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the blockId attribute of the betterdocs/category-slate-layout Gutenberg block in versions up to, and including, 4.5.3. This is due to insufficient input sanitization and output escaping in the CategorySlateLayout::render() method, which echoes the blockId block attribute directly into an HTML class attribute without esc_attr(). 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.

Affected WordPress components

  • BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot Plugin · betterdocs
    Confirmed match Active
    Up to and including 4.5.3
    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

  • wpdevteam BetterDocs – AI Documentation, Knowledge Base, Docs, Wikis, FAQ with Chatbot — Up to and including 4.5.3

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.3.12/includes/Editors/BlockEditor/Blocks/CategorySlateLayout.php#L66
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.3.12/includes/Editors/BlockEditor/Blocks/CategorySlateLayout.php#L97
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.5.3/includes/Editors/BlockEditor/Blocks/CategorySlateLayout.php#L66
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.5.3/includes/Editors/BlockEditor/Blocks/CategorySlateLayout.php#L97
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3576713%40betterdocs&new=3576713%40betterdocs&sfp_email=&sfph_mail=
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/81f61ef0-b3c7-4c69-bd18-5e5f0ea09abc?source=cve
  • nvd.nist.gov Official NVD record