Is CVE-2026-33406 actively exploited?

No active exploitation of CVE-2026-33406 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33406 be exploited remotely?

Yes. CVE-2026-33406 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33406?

CVE-2026-33406 has a CVSS score of 5.4 (MEDIUM).

HOME VULNERABILITIESCVE-2026-33406

MEDIUM

CVE-2026-33406

CWE-79Published: April 6, 2026· Updated: Apr 7, 2026

5.4

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:10.5th

Official 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, configuration values from the /api/config endpoint are placed directly into HTML value="" attributes without escaping in settings-advanced.js, enabling HTML attribute injection. A double quote in any config value breaks out of the attribute context. JavaScript execution is blocked by the server's CSP (script-src 'self'), but injected attributes can alter element styling for UI redressing. The primary attack vector is importing a malicious teleporter backup, which bypasses per-field server-side validation. This vulnerability is fixed in 6.5.

NVD Source

Technical Analysis

CVE-2026-33406 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.