CVEvulnerability

CVE-2026-35517

8.8 HIGH Published 2026-04-07 Modified 2026-10-26 Official page ↗
Status
Analyzed
Published
2026-04-07
Last modified
2026-10-26
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78, CWE-93

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.

Affected configurations

• pi-hole ftldns (>= 6.0 <= 6.5)

Related

Weakness · CWE (2)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness
  • CWE-93 Improper Neutralization of CRLF Sequences weakness

References