← All Status Codes
414
URI Too Long
⚠️ Client Error
Low Risk
📖 What Is HTTP 414?
The URL is longer than the server is willing to process. Most servers limit URLs to 8KB. Browsers typically support up to 2KB.
🛡️ Security Implications
Long URLs can be used for buffer overflow attacks on poorly written servers. Enforce URI length limits.
🔍 Common Causes
Excessive query parameters, base64 data in URL, deeply nested routing, or misconfigured URL rewriting creating loops.
🔧 How to Fix
Move data from the URL to the request body using POST. Shorten query parameters. Check for redirect loops that append parameters.
🖥️ How to Check
curl -I -o /dev/null -w "%{http_code}" https://example.com