CVE-2026-11371

BetterDocs < 4.5.5 - Unauthenticated Stored XSS via AI Doc Summarizer Prompt Injection

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.

We have discovered 1,126 live websites that are affected by CVE-2026-11371.

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Affected Software

Product  BetterDocs plugin
Category Wordpress Plugins
Vulnerable Domains1,126 live websites (71% of BetterDocs plugin install base)
Vulnerable Versions
  • from 4 through 4.5.5
Vulnerable Versions Count29 versions ( 38% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Jul 16, 2026
  • Updated - Jul 16, 2026

Credits

  • mcdruid (finder)
  • WPScan (coordinator)

Website Distribution by Country

Number of websites using CVE-2026-11371
United States484 websites


Germany99 websites
GB48 websites
Netherlands41 websites
France38 websites
Canada27 websites
Cyprus27 websites
Brazil27 websites
Australia25 websites
South Africa21 websites

Website Distribution by TLD

Number of websites using CVE-2026-11371
.com523 websites
.org79 websites
.de53 websites
.nl34 websites
.co.uk32 websites
.net27 websites
.com.au23 websites
.com.br23 websites
.be14 websites
.fr12 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-11371

Top websites that are affected by CVE-2026-11371. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
***********.com United States*,***
****.gr Greece**,***
*********.com United States***,***
********.com United States***,***
****.************.ventures United States***,***
*********.com United States***,***
****************.**.uk GB***,***
*****.de Germany***,***
***********.com United States***,***
*******.io United States***,***
See full domain list

FAQ

CVE-2026-11371 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in BetterDocs plugin
A total of 1,126 websites have been identified as vulnerable to CVE-2026-11371, based on global website indexing conducted by WebTechSurvey.
The BetterDocs plugin is affected by the CVE-2026-11371 vulnerability.
BetterDocs plugin versions up to 4.5.5 are vulnerable to CVE-2026-11371.
CVE-2026-11371 is resolved in version 4.5.5 of BetterDocs plugin.