PT-2026-30865 · Pi-Hole · Pihole-Ftl+1

T0X1Cx · CVE-2026-35517 · Published 2026-04-03 · Updated 2026-05-01

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions FTLDNS (pihole-FTL) versions 6.0 through 6.5

Description The Pi-hole FTL engine contains a Remote Code Execution (RCE) issue in the upstream DNS servers configuration parameter (dns.upstreams). An authenticated attacker can inject arbitrary dnsmasq configuration directives through newline characters, leading to command execution on the system.

Recommendations Update to version 6.6 or later.

Exploit

Fix

RCE

OS Command Injection

Weakness Enumeration

CWE-78

CWE-93

Related Identifiers

BDU:2026-05390

CVE-2026-35517

GHSA-23W8-7333-P9FJ

Affected Products

Ftldns

Pihole-Ftl

References · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/35xxx/CVE-2026-35517.json · Exploit
• https://github.com/pi-hole/FTL/security/advisories/GHSA-23w8-7333-p9fj · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-35517 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-35517 · Security Note
• https://bdu.fstec.ru/vul/2026-05390 · Security Note
• https://twitter.com/CVEnew/status/2041603212109611400 · Twitter Post
• https://reddit.com/r/pihole/comments/1t0pxun/wanted_to_learn_about_the_pihole_april_2026 · Reddit Post
• https://twitter.com/keraattin/status/2043959696864825583 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2041601647827161158 · Twitter Post