CVE-2025-53533: medium-severity vulnerability in pi-hole web
Pi-hole Admin Interface vulnerable to cross-site scripting via malformed URL path on 404 error page
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 5.1epss 0.6%
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
pi-hole · webRelated CVEs — pi-hole web
In the same product, most dangerous first.
CVE-2026-33765HIGHPi-hole Web Interface has a Command Injection VulnerabilityEPSS 1.3%CVE-2025-59151HIGHPi-hole Admin Interface vulnerable to HTTP response header injection via CRLF injectionEPSS 0.4%CVE-2026-26953MEDIUMPi-hole Web Interface has Stored HTML Injection via X-Forwarded-For Header in Active Sessions TableEPSS 0.3%CVE-2026-26952MEDIUMPi-hole Web Interface has Stored HTML Injection via Local DNS Records (CNAME/Hosts) in data-tag AttributeEPSS 0.3%CVE-2026-33406MEDIUMPi-hole has a Stored HTML attribute injectionEPSS 0.3%CVE-2025-32785LOWPi-hole Admin Interface vulnerable to persistent XSS on Subscribed lists group management (Adress Field)EPSS 0.3%