CVE-2026-33404: low-severity vulnerability in pi-hole web
Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
8Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 3.4epss 0.1%
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, client hostnames and IP addresses from the FTL database are rendered into the DOM without escaping in network.js (Network page) and charts.js/index.js (Dashboard chart tooltips). While upstream validation in dnsmasq and FTL blocks HTML characters via normal DHCP/DNS paths, the web UI performs no output escaping — an inconsistency with other fields in the same file that are properly escaped. This vulnerability is fixed in 6.5.
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/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%