Dnsmasq: dnsmasq: --leasequery without address argument applies no source address check
Historical advisory recorded 29 Oct 2026 15:12:12 UTC. Read the latest advisory.
cve-program · CVE-2026-93010
PublishedA flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.
Read the publisher's advisoryAffected versions, risk and source history
cve-program · CVE-2026-93010
PublishedDnsmasq: dnsmasq: --leasequery without address argument applies no source address check
A flaw was found in dnsmasq. When DHCP leasequery is enabled without listing allowed source addresses, the server does not check who sent the query. A host on the local network can request DHCP lease records and learn assigned addresses, MAC addresses, hostnames, and related lease metadata. The feature is off unless an administrator turns it on.
- Source published
- 29 Oct 2026 13:13:23 UTC
- Source modified
- 29 Oct 2026 13:13:23 UTC
- Saved here
- 29 Oct 2026 15:12:12 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
Source: cve-program · CVE Program Terms of Use. The publisher's wording is preserved. ChangeIntel groups the information and labels changes. The JSON record includes additional source fields.
CVSS 3.1 · 4.3 CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N