BetterDocs <= 4.9.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'toc_title' Shortcode Attribute

ID

WPSEC-2026-2870

Plugin

BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot (betterdocs)

Affected

all versions before 4.9.6

Remediation

Update to 4.9.6 or later.

CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Weakness

CWE-79

Usage

Plugin Medium · Affected versions Medium among sites WPSec scans, 2026-11-12

Attack surface

BetterDocs on WPSec AttackSurface

Fix released

2026-11-10

Published

2026-11-12

Description

The BetterDocs plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'toc_title' attribute of the betterdocs_toc shortcode in all versions up to, and including, 4.9.5 due to insufficient output escaping on user-supplied attributes. Only the fallback title taken from the plugin settings was escaped. A title supplied through the shortcode attribute was echoed without 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.

References

• https://wpsec.com/vuln/WPSEC-2026-2870/
• https://plugins.svn.wordpress.org/betterdocs/tags/4.9.6/
• https://wordpress.org/plugins/betterdocs/

Published by WPSec. Provided as is, without warranty. Corrections: contact us.

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