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CVE-2026-33404— Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard

Quick assessment

Affected
pi-hole web
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Pi-Hole Adminlte是一个控制面板。用于统计更多数据。 Pi-Hole Adminlte 6.0至6.5之前版本存在跨站脚本漏洞，该漏洞源于网络页面和仪表板图表工具提示中客户端主机名和IP地址渲染未转义，可能导致跨站脚本攻击。

CVSS 3.4 · Low EPSS 0.14% · P4
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I. Basic Information for CVE-2026-33404

Vulnerability Information
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Vulnerability Title
Pi-hole has a Stored XSS / HTML injection in the Network page/Dashboard
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
Pi-Hole Adminlte 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Pi-Hole Adminlte是一个控制面板。用于统计更多数据。 Pi-Hole Adminlte 6.0至6.5之前版本存在跨站脚本漏洞，该漏洞源于网络页面和仪表板图表工具提示中客户端主机名和IP地址渲染未转义，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
pi-hole web >= 6.0, < 6.5 -

II. Public POCs for CVE-2026-33404

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III. Intelligence Information for CVE-2026-33404

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Vendor Advisories for CVE-2026-33404 (1)

Same Patch Batch · pi-hole · 2026-04-06 · 5 CVEs total

CVE-2026-33727 6.4 MEDIUM Pi-hole has a Local Privilege Escalation (post-compromise, pihole -> root).
CVE-2026-33403 6.1 MEDIUM Pi-hole has a Reflected XSS / HTML injection in taillog.js
CVE-2026-33406 5.4 MEDIUM Pi-hole has a Stored HTML attribute injection
CVE-2026-33405 3.1 LOW Pi-hole has a Stored HTML Injection in queries.js

IV. Related Vulnerabilities

Same product: web
Same vendor: pi-hole
Same weakness: CWE-79

V. Comments for CVE-2026-33404

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