Allocation of Resources Without Limits or Throttling Affecting python-zeroconf package, versions <0.149.7-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.39% (32nd percentile)

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  • Snyk IDSNYK-DEBIAN14-PYTHONZEROCONF-18015056
  • published18 Jul 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

CVE-2026-47184  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade Debian:14 python-zeroconf to version 0.149.7-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python-zeroconf package and not the python-zeroconf package as distributed by Debian. See How to fix? for Debian:14 relevant fixed versions and status.

Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.7, DNSCache._async_add inserted every response record into cache, _expirations, _expire_heap, and service_cache without a cap, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to multicast valid mDNS responses with unique names and cause memory exhaustion, slower cache lookups, slower async_expire passes, and broken discovery, registration, and ServiceBrowser callbacks. This issue is fixed in version 0.149.7.

CVSS Base Scores

version 3.1