CVE-2026-35519
RCE in Pi-hole FTLDNS via dns.hostRecord
Is CVE-2026-35519 being exploited?
Not confirmed. CVE-2026-35519 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.54% probability of exploitation in the next 30 days.
How severe is CVE-2026-35519?
CVE-2026-35519 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-35519?
Yes. A fix has been recorded for CVE-2026-35519. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-35519 affect?
CVE-2026-35519 affects Pi-hole FTLDNS (dns.hostRecord) prior to v6.6. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-35519?
Update to Pi-hole 6.6+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can inject newline-delimited dnsmasq directives into dns.hostRecord to execute commands on the host.
Patch when possible
- affected>= 6.0 and < 6.6
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.