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CVE-2026-33404

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

Published: Apr 6, 2026Updated: Apr 14, 2026 Sources: CVE List NVDCWE-79
NVD MITRE
3.4CVSSLOW
EPSS Score
0.1%
Top 96.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:LAC:LPR:HUI:NS:UC:LI:LA:N
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

webpi-hole
On-prem
Networking Infrastructure / dns-dhcp-ntp
web interfacepi-hole
On-prem
Networking Infrastructure / dns-dhcp-ntp
pi-holeoss-projectNetworking Infrastructureaka pi-hole

Attack Graph

Products CVE Techniques Tactics

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Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/pi-hole/web/security/advisories/GHSA-px6w-85wp-ww9v
github.com

Timeline

Published
Apr 6, 2026
Last Updated
Apr 14, 2026

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