CVE-2026-33405

Pi-hole has a Stored HTML Injection in queries.js

State: Published
Severity: 3.1 Low
Published: Apr 6, 2026
Updated: Apr 6, 2026
Reserved: Mar 19, 2026

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, 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.

Scores

CVSS	Score	Vector	Source
3.1	3.1 Low	CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
webpi-hole	>= 6.0, < 6.5Affected

References

https://github.com/pi-hole/web/security/advisories/GHSA-jx8x-mj2r-62vq

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