CVE-2026-12157— BetterDocs <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'blockId' Block Attribute
Possible ATT&CK Techniques 2AI
T1059 · Command and Scripting Interpreter T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| wpdevteam | BetterDocs – AI Documentation, Knowledge Base, Docs, Wikis, FAQ with Chatbot | ≤ 4.5.3 | affected |
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I. Basic Information for CVE-2026-12157
Vulnerability Information
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Vulnerability Title
BetterDocs <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'blockId' Block Attribute
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WPDeveloper BetterDocs 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WPDeveloper BetterDocs是WPDeveloper公司的一个AI文档、知识库和FAQ管理的WordPress插件。 WPDeveloper BetterDocs 4.5.3及之前版本存在跨站脚本漏洞，该漏洞源于CategorySlateLayout::render()方法清理和转义不足，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| wpdevteam | BetterDocs – AI Documentation, Knowledge Base, Docs, Wikis, FAQ with Chatbot | 0 ~ 4.5.3 | - |
II. Public POCs for CVE-2026-12157
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-12157 (1)
Security Blog Posts for CVE-2026-12157 (1)
Other References for CVE-2026-12157 (1)
IV. Related Vulnerabilities
Same vendor: wpdevteam
- CVE-2026-18438
Templately <= 3.7.1 - Authenticated (Contributor+) Arbitrary - CVE-2026-15145
Essential Addons for Elementor <= 6.6.11 - Authenticated (Co - CVE-2026-15156
Essential Addons for Elementor <= 6.6.11 - Authenticated (Co - CVE-2026-15155
Essential Addons for Elementor <= 6.6.10 - Authenticated (Co - CVE-2026-15104
BetterDocs <= 4.6.0 - Authenticated (Custom+) SQL Injection
Same weakness: CWE-79
V. Comments for CVE-2026-12157
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