CVE-2026-33405 LOW

CVE-2026-33405: Pi-hole has a Stored HTML Injection in queries.js

Vendor Pi-Hole
Product web
Weakness CWE-79 · XSS
Published April 6, 2026
Last update April 6, 2026

CVSS base score

3.1/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

What the vulnerability does

01Description

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, the formatInfo() function in queries.js renders data.upstream, data.client.ip, and data.ede.text into HTML without escaping when a user expands a query row in the Query Log, enabling stored HTML injection. JavaScript execution is blocked by the server's CSP (script-src 'self'). The same fields are properly escaped in the table view (rowCallback), confirming the omission was an oversight. This vulnerability is fixed in 6.5.

Key dates

02Disclosure timeline

April 6, 2026 CVE published
April 6, 2026 Record updated

Related vulnerabilities

04Related CVE