CVE-2026-34933: Avahi

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. Prior to version 0.9-rc4, any unprivileged local user can crash avahi-daemon by sending a single D-Bus method call with conflicting publish flags. This issue has been patched in version 0.9-rc4.

Affected products

• Avahi Avahi: before 0.9 (fixed in 0.9); version 0.9 only

Published 2026-04-03. Last modified 2026-07-24.