CVE-2026-3875: BetterDocs <= 4.3.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes
The BetterDocs plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'betterdocsfeedbackform' shortcode in all versions up to, and including, 4.3.8. This is due to insufficient input sanitization and output escaping on user supplied shortcode attributes. 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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-3875?
CVE-2026-3875 has a high severity due to its potential for stored cross-site scripting attacks on affected WordPress installations.
How do I fix CVE-2026-3875?
To fix CVE-2026-3875, update the BetterDocs plugin to version 4.3.9 or later.
Who is affected by CVE-2026-3875?
All users of the BetterDocs plugin for WordPress versions up to and including 4.3.8 are affected by CVE-2026-3875.
What is the exploit method of CVE-2026-3875?
CVE-2026-3875 can be exploited through stored cross-site scripting via the 'betterdocs_feedback_form' shortcode.
What are the consequences of CVE-2026-3875?
Successful exploitation of CVE-2026-3875 can lead to unauthorized script execution in the context of an authenticated user, compromising site security.