Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.3.12/includes/Edito
- https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.3.12/includes/Edito
- https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.5.3/includes/Editor
- https://plugins.trac.wordpress.org/browser/betterdocs/tags/4.5.3/includes/Editor
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old
- https://www.wordfence.com/threat-intel/vulnerabilities/id/81f61ef0-b3c7-4c69-bd1
FAQ
What is CVE-2026-12157?
CVE-2026-12157 is a vulnerability with a CVSS score of 6.4 (MEDIUM). 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-...
How severe is CVE-2026-12157?
CVE-2026-12157 has been rated MEDIUM with a CVSS base score of 6.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-12157?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.