CVE-2026-12157: Wpdevteam Betterdocs – Ai Documentation, Knowledge Base, Docs, Wikis, Faq With Chatbot

Medium severity, CVSS 6.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Wpdevteam Betterdocs – Ai Documentation, Knowledge Base, Docs, Wikis, Faq With Chatbot: up to and including 4.5.3

Published 2026-06-19. Last modified 2026-06-22.