CVE-2026-34933

MEDIUM

Avahi: Reachable assertion in `transport_flags_from_domain()` via conflicting publish flags crashes avahi-daemon

Title source: cna

Description

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.

References (4)

Scores

CVSS v3 5.5
EPSS 0.0002
EPSS Percentile 5.1%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-617
Status published
Products (3)
avahi/avahi 0.9 rc1 (3 CPE variants)
avahi/avahi < 0.9
avahi/avahi < 0.9-rc4
Published Apr 03, 2026
Tracked Since Apr 04, 2026