CVE-2026-11371 BetterDocs < 4.5.5 - Unauthenticated Stored XSS via AI Doc Summarizer Prompt Injection
Unauthenticated attackers can inject malicious scripts via AI prompt injection in BetterDocs, leading to stored XSS and potential admin account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-11371?
CVE-2026-11371 is a medium-severity cross-site scripting vulnerability in Unknown BetterDocs, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The BetterDocs WordPress plugin before 4.5.5 does not sanitise an AI-generated documentation summary before storing and outputting it, and the feature that generates it is exposed to unauthenticated users, allowing them to store a malicious payload via prompt injection that executes in the browser of any visitor who views the affected page, including administrators.
Weakness: CWE-79
Which versions are affected by CVE-2026-11371?
How do I fix CVE-2026-11371?
No fix has been published for CVE-2026-11371 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-2026-11371 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-11371 exists.
Sources
Also known as GHSA-x6ph-p955-jvgx.