High · published October 28, 2025
🚨 A sneaky CRLF injection is lurking in the Pi-hole Admin Interface, letting an attacker manipulate headers with a simple crafted request! ⚡ Think of it as a restaurant where the chef accepts any handwritten note without checking the ingredients. If the wrong note gets through, they could sneak in extra dishes that change the flavor of the entire menu! This vulnerability could allow a crafty attacker to inject arbitrary HTTP response headers, potentially leading to session fixation and cache poisoning. It’s like giving someone a master key to your restaurant, letting them alter orders and spoil the experience for everyone!
Think of it as a restaurant where the chef accepts any handwritten note without checking the ingredients. If the wrong note gets through, they could sneak in extra dishes that change the flavor of the entire menu! The CRLF injection vulnerability in Pi-hole Admin Interface versions prior to 6.3 allows attackers to manipulate HTTP headers by injecting carriage return and line feed characters in requests to files ending with .lp. This can weaken browser security mechanisms and lead to other exploits.
This vulnerability could allow a crafty attacker to inject arbitrary HTTP response headers, potentially leading to session fixation and cache poisoning. It’s like giving someone a master key to your restaurant, letting them alter orders and spoil the experience for everyone! To secure your Pi-hole, upgrade to version 6.3 immediately! Additionally, review your configurations to ensure that no unfiltered input is being accepted. Always maintain a good habit of sanitizing inputs! You've got this! Follow these steps, and your Pi-hole will be more secure than ever! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| pi-hole/web_interface | < 6.3 | 6.3 |