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CVE-2026-35521

Pi-hole FTL affected by Remote Code Execution (RCE) via dhcp.hosts Newline Injection

Published: Apr 7, 2026Updated: Apr 28, 2026 Sources: CVE List NVDCWE-78
NVD MITRE
8.8CVSSHIGH
EPSS Score
0.7%
Top 52.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

FTLDNS (pihole-FTL) provides an interactive API and also generates statistics for Pi-hole's Web interface. From 6.0 to before 6.6, the Pi-hole FTL engine contains a Remote Code Execution (RCE) vulnerability in the DHCP hosts configuration parameter (dhcp.hosts). This vulnerability allows an authenticated attacker to inject arbitrary dnsmasq configuration directives through newline characters, ultimately achieving command execution on the underlying system. This vulnerability is fixed in 6.6.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-78CWE-93

Affected Products

FTLpi-hole
On-prem
Networking Infrastructure / dns-dhcp-ntp
ftldnspi-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

Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://github.com/pi-hole/FTL/security/advisories/GHSA-vfmq-jrx3-wv3c
github.com

Timeline

Published
Apr 7, 2026
Last Updated
Apr 28, 2026

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