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.
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Affected Vendors & Products
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History
Mon, 22 Jun 2026 13:30:00 +0000
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ssvc
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Sun, 21 Jun 2026 09:45:00 +0000
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Wordpress
Wordpress wordpress Wpdevteam Wpdevteam betterdocs – Ai Documentation, Knowledge Base, Docs, Wikis, Faq With Chatbot |
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Wordpress
Wordpress wordpress Wpdevteam Wpdevteam betterdocs – Ai Documentation, Knowledge Base, Docs, Wikis, Faq With Chatbot |
Fri, 19 Jun 2026 06:15:00 +0000
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| 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. | |
| Title | BetterDocs <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'blockId' Block Attribute | |
| Weaknesses | CWE-79 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-06-19T04:31:32.712Z
Updated: 2026-06-22T12:52:02.336Z
Reserved: 2026-06-12T18:27:41.912Z
Link: CVE-2026-12157
Updated: 2026-06-22T12:51:57.865Z
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