Server header leaks technology information: what it is, why it matters, and how to fix it
The Server response header discloses the web server software and version number, providing attackers with information about potential vulnerabilities.
Where this fits: security in SEO
Why server header leaks technology information hurts your rankings
Knowing the exact server software and version helps attackers identify known vulnerabilities to exploit. While security through obscurity is not a primary defense, removing version information raises the bar for automated scanners and script kiddies targeting specific versions.
This is a low-severity issue: a polish item. Fix it in batches during scheduled maintenance; the win is cumulative quality, not a step change.
How to fix it
Configure your web server to remove or genericize the Server header. Most web servers allow you to suppress version information or replace the header value entirely.
# nginx
server_tokens off;
# Apache
ServerTokens Prod
ServerSignature OffFrequently asked questions
What does "Server header leaks technology information" mean?
The Server response header discloses the web server software and version number, providing attackers with information about potential vulnerabilities.
Why does server header leaks technology information matter for SEO?
Knowing the exact server software and version helps attackers identify known vulnerabilities to exploit. While security through obscurity is not a primary defense, removing version information raises the bar for automated scanners and script kiddies targeting specific versions.
How do I fix server header leaks technology information?
Configure your web server to remove or genericize the Server header. Most web servers allow you to suppress version information or replace the header value entirely.
How serious is this issue?
This is a low-severity issue: a polish item. Fix it in batches during scheduled maintenance; the win is cumulative quality, not a step change. It belongs to the security family of checks.
How do I find every page affected by this on my site?
Run a free Dr Urls audit: it crawls your site, detects server header leaks technology information on every affected page, shows example URLs, and generates a ready-to-use fix task. Re-scan after fixing to verify the issue is gone.
Does your site have this issue?
A free Dr Urls audit crawls your site, finds every page affected by server header leaks technology information, and hands you a ready-made fix task.
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