python-zeroconf: Zeroconf is a pure Python implementation of multicast DNS service discovery
CVE-2026-47183 is fixed in python-zeroconf on 1 platform, first by OPENSUSE-SU-2026:21175-1, released June 30, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.6, DNSIncoming._log_exception_debug and the four QuietLogger exception-dedup methods stored an unbounded _seen_logs dictionary keyed by attacker-influenced IncomingDecodeError messages, retaining sys.exc_info() tracebacks whose frame locals kept raw packet self.data buffers and allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to drive memory growth until mDNS-dependent features degrade or the process is OOM-killed. This issue is fixed in version 0.149.6.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-zeroconf · Debian 14 | 0.149.6-1 | DEBIAN-CVE-2026-47183 | Jul 18, 2026 |
| python-zeroconf · opensuse-leap 16.0 | 0.136.0-bp160.2.1 | OPENSUSE-SU-2026:21175-1 | Jun 30, 2026 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.