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zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion

🗓️ 13 Jul 2026 15:19:14Reported by Python Packaging AdvisoryType 
pypa
 pypa🔗 github.com👁 2 Views

ImpactDNSIncoming._log_exception_debug and the four QuietLogger exception-dedup methods stored an unbounded _seen_logs dict keyed by str(sys.exc_info()[1]). The seven IncomingDecodeError messages raised from _read_name / _decode_labels_at_offset (...

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Detection
Refs
ReporterTitlePublishedViews
Family
CVE		CVE-2026-47183
29 May 202620:13
–cve
Github Security Blog		zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion
29 May 202620:13
–github
Tenable Nessus		openSUSE 16 Security Update : python-zeroconf (openSUSE-SU-2026:21175-1)
2 Jul 202600:00
–nessus
OPENSUSE Linux		Security update for python-zeroconf (moderate)
1 Jul 202600:00
–opensuse
OSV		GHSA-PHVX-9MGW-67R5 zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion
29 May 202620:13
–osv
OSV		OPENSUSE-SU-2026:21175-1 Security update for python-zeroconf
30 Jun 202609:08
–osv
OSV		PYSEC-2026-3437 zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion
13 Jul 202615:19
–osv
Positive Technologies		PT-2026-45025
29 May 202600:00
–ptsecurity
Snyk		Allocation of Resources Without Limits or Throttling
29 May 202620:13
–snyk
SUSE CVE		SUSE CVE-2026-47183
17 Jun 202602:16
–susecve
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Vulners
Node
pypizeroconfRange0–0.149.6

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13 Jul 2026 16:07Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.16.5
EPSS0.0002
2