CVE-2026-35520
Last modified
CVE-2026-35520 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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 lease time configuration parameter (dhcp.leaseTime). EPSS estimates a 0.70% chance of exploitation in the next 30 days.
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 lease time configuration parameter (dhcp.leaseTime). 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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pi-Hole | Ftldns | >= 6.0, <= 6.5 |
References
- https://github.com/pi-hole/FTL/security/advisories/GHSA-fqv2-qhfh-ghcjExploit, Vendor Advisory
- https://github.com/pi-hole/FTL/security/advisories/GHSA-fqv2-qhfh-ghcjExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-35520?
How severe is CVE-2026-35520?
How do I fix CVE-2026-35520?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-35515Nest is a framework for building scalable Node.js server-sid…6.1
- CVE-2026-35516LinkAce is a self-hosted archive to collect website links. P…5
- CVE-2026-35517FTLDNS (pihole-FTL) provides an interactive API and also gen…8.8
- CVE-2026-35518FTLDNS (pihole-FTL) provides an interactive API and also gen…8.8
- CVE-2026-35519FTLDNS (pihole-FTL) provides an interactive API and also gen…8.8
- CVE-2026-3552The SurfLink - Ultimate Link Manager plugin for WordPress is…4.3
- CVE-2026-35521FTLDNS (pihole-FTL) provides an interactive API and also gen…8.8
- CVE-2026-35523Strawberry GraphQL is a library for creating GraphQL APIs. S…7.5
- CVE-2026-35525LiquidJS is a Shopify / GitHub Pages compatible template eng…7.5
- CVE-2026-35526Strawberry GraphQL is a library for creating GraphQL APIs. P…7.5
- CVE-2026-35527Incus is an open source container and virtual machine manage…5
- CVE-2026-3553GitLab has remediated an issue in GitLab CE/EE affecting all…3.1
Are you affected by CVE-2026-35520?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST