CVE-2026-75980 Cross-site scripting in BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot
Authenticated contributors can inject arbitrary scripts via heading IDs in BetterDocs, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-75980?
CVE-2026-75980 is a medium-severity cross-site scripting vulnerability in wpdevteam BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot, published on 1 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2026-75980?
How do I fix CVE-2026-75980?
No fix has been published for CVE-2026-75980 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-75980 being exploited?
There is no known exploitation of CVE-2026-75980 in the wild and no public exploit code.
Sources
Also known as GHSA-xx89-f47v-hmxp.