CVE-2026-33403: medium-severity vulnerability in pi-hole web
Pi-hole has a Reflected XSS / HTML injection in taillog.js
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.1epss 0.2%
Pi-hole Admin Interface is a web interface for managing Pi-hole, a network-level ad and internet tracker blocking application. From 6.0 to before 6.5, a reflected DOM-based XSS vulnerability in taillog.js allows an unauthenticated attacker to inject arbitrary HTML into the Pi-hole admin interface by crafting a malicious URL. The file query parameter is interpolated into an innerHTML assignment without escaping. Because the Content-Security-Policy is missing the form-action directive, injected <form> elements can exfiltrate credentials to an external origin. This vulnerability is fixed in 6.5.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A: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-2025-53533MEDIUMPi-hole Admin Interface vulnerable to cross-site scripting via malformed URL path on 404 error pageEPSS 0.6%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%