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.
History

Tue, 28 Oct 2025 10:30:00 +0000

Type Values Removed Values Added
First Time appeared Pi-hole
Pi-hole pi-hole
Pi-hole web Interface
Vendors & Products Pi-hole
Pi-hole pi-hole
Pi-hole web Interface

Mon, 27 Oct 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 27 Oct 2025 20:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Pi-hole Admin Interface vulnerable to HTTP response header injection via CRLF injection
Weaknesses CWE-113
CWE-93
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2025-10-27T19:42:59.596Z

Updated: 2025-10-27T20:24:05.879Z

Reserved: 2025-09-09T15:23:16.327Z

Link: CVE-2025-59151

cve-icon Vulnrichment

Updated: 2025-10-27T20:24:00.143Z

cve-icon NVD

Status : Received

Published: 2025-10-27T20:15:53.630

Modified: 2025-10-27T20:15:53.630

Link: CVE-2025-59151

cve-icon Redhat

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