CVE-2025-59151

Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level advertisement and internet tracker blocking application. Pi-hole Admin Interface before 6.3 is vulnerable to Carriage Return Line Feed (CRLF) injection. When a request is made to a file ending with the .lp extension, the application performs a redirect without properly sanitizing the input. An attacker can inject carriage return and line feed characters (%0d%0a) to manipulate both the headers and the content of the HTTP response. This enables the injection of arbitrary HTTP response headers, potentially leading to session fixation, cache poisoning, and the weakening or bypassing of browser-based security mechanisms such as Content Security Policy or X-XSS-Protection. This vulnerability is fixed in 6.3.

Affected products

Pi-Hole Admin Interface

Pi-hole Web Interface

< 6.3

Fix

Available

CVSS 3.1

8.2 HIGH

EPSS

0.4% (34th percentile)

Weakness

CWE-113, CWE-93

NVD status

Analyzed

Published

2025-10-27

No exploit for CVE-2025-59151 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.