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CVE-2026-35517

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

Published: Apr 7, 2026Updated: Apr 28, 2026 Sources: CVE List NVD BDUCWE-78
8.8HIGH
NVD MITRE
EPSS Score
0.9%
Top 46.3%
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 upstream DNS servers configuration parameter (dns.upstreams). 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.

No summary for this CVE yet.

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

ftldnspi-hole
On-premLibrary
Networking Infrastructure / dns-dhcp-ntp
FTLpi-hole
On-premLibrary
Networking Infrastructure / dns-dhcp-ntp
FTLDNS (pihole-FTL)Pi-hole, LLC
On-prem
Networking Infrastructure / dns-dhcp-ntp
pi-holeoss-projectNetworking Infrastructureaka pi-hole
pi-hole, llccommercialUSNetworking Infrastructureaka pihole-ftl, ftldns

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Execution
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References

https://github.com/pi-hole/FTL/security/advisories/GHSA-23w8-7333-p9fj
github.com

Timeline

Published
Apr 7, 2026
Last Updated
Apr 28, 2026

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