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CVE-2026-75980— BetterDocs <= 4.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Heading 'id' Attribute in Post Content

Quick assessment

Affected
wpdevteam BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress BetterDocs是WordPress基金会开源的一款文档管理插件。 WordPress BetterDocs 4.8.1及之前版本存在跨站脚本漏洞，该漏洞源于对文章内容中Heading 'id'属性输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上权限）在页面中注入任意Web脚本，当用户访问时执行。

CVSS 6.4 · Medium EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
wpdevteam BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot ≤ 4.8.1 affected
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I. Basic Information for CVE-2026-75980

Vulnerability Information
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Vulnerability Title
BetterDocs <= 4.8.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Heading 'id' Attribute in Post Content
Source: CVE Program / CVE List V5
Vulnerability Description
The BetterDocs – AI Documentation, Knowledge Base, Docs, Wikis, FAQ with Chatbot plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Heading 'id' Attribute in Post Content in all versions up to, and including, 4.8.1 due to insufficient input sanitization and output escaping. 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. The exploit survives wp_kses_post because entity-encoded quotes in a heading id attribute are treated as a single legitimate attribute value at save time; the dangerous payload only materialises after process_content_for_toc() calls html_entity_decode() on the stored content and the broken id is extracted by a lazy regex before being echoed unescaped into the Table of Contents output.
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
WordPress BetterDocs 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress BetterDocs是WordPress基金会开源的一款文档管理插件。 WordPress BetterDocs 4.8.1及之前版本存在跨站脚本漏洞，该漏洞源于对文章内容中Heading 'id'属性输入清理和输出转义不足，可能导致经过身份验证的攻击者（具有贡献者级别及以上权限）在页面中注入任意Web脚本，当用户访问时执行。
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, MCP Server, Docs, Wikis, FAQ & Chatbot 0 ~ 4.8.1 -

II. Public POCs for CVE-2026-75980

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III. Intelligence Information for CVE-2026-75980

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Patches & Fixes for CVE-2026-75980 (3)

Security Blog Posts for CVE-2026-75980 (1)

Other References for CVE-2026-75980 (1)

IV. Related Vulnerabilities

Same vendor: wpdevteam
Same weakness: CWE-79

V. Comments for CVE-2026-75980

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