Change record status: 
Project: 
Introduced in branch: 
11.4.x
Introduced in version: 
11.4.0
Description: 

The default robots.txt file now includes rules to prevent search engine crawlers from indexing search result pages that use query parameters. Both path-based and query parameter search URLs are blocked.

This prevents search engines from crawling URLs like /search?q=keyword, /search?f[0]=type:article, or any search result page that uses query strings.

Only sites with a customized robots.txt file should update the file to include these changes.

Examples for sites with a custom robots.txt

Manually add these two lines to your robots.txt file:

Monolingual sites
Disallow: /search?
Disallow: /index.php/search?
Multilingual sites
Disallow: /*/search/
Disallow: /*/search?
Impacts: 
Site builders, administrators, editors