CVE-2026-33404CWE-79

Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard

Low · published April 6, 2026

CVSS v3.1
3.4
EPSS
0%
Percentile
15.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.4 · LOW
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00249 · 15.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-04-06T14:48Z
EPSS history
Timeline
  • 06 APR 14:48Z
    Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard
    cvelistv5