CVE-2025-53533

Unknown Unknown - Not Provided

BaseFortify

Publication date: 2025-10-27

Last updated on: 2025-12-18

Assigner: GitHub, Inc.

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 versions 6.2.1 and earlier are vulnerable to reflected cross-site scripting (XSS) via a malformed URL path. The 404 error page includes the requested path in the class attribute of the body tag without proper sanitization or escaping. An attacker can craft a URL containing an onload attribute that will execute arbitrary JavaScript code in the browser when a victim visits the malicious link. If an attacker sends a crafted pi-hole link to a victim and the victim visits it, attacker-controlled JavaScript code is executed in the browser of the victim. This has been patched in version 6.3.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-27

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-10-27

EPSS Evaluated

2026-07-05

NVD

CVE-2025-53533

EUVD

EUVD-2025-36367

Affected Vendors & Products

Vendor	Product	Version / Range
pi-hole	web_interface	to 6.3 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is a reflected cross-site scripting (XSS) issue in the Pi-hole Admin Interface versions 6.2.1 and earlier. It occurs because the 404 error page includes the requested URL path in the body tag's class attribute without properly sanitizing or escaping it. An attacker can craft a malicious URL containing JavaScript code that executes when a victim visits the link, allowing the attacker to run arbitrary code in the victim's browser. This vulnerability has been fixed in version 6.3.

Impact Analysis

If an attacker successfully exploits this vulnerability, they can execute arbitrary JavaScript code in the victim's browser when the victim visits a maliciously crafted URL. This can lead to theft of sensitive information, session hijacking, or other malicious actions performed in the context of the victim's browser session with the Pi-hole Admin Interface.

Mitigation Strategies

Upgrade the Pi-hole Admin Interface to version 6.3 or later, as this version contains the patch that fixes the reflected cross-site scripting (XSS) vulnerability.

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