Analysis
Analysis and contextual insights are available on OpenCVE Cloud.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| python-zeroconf | python-zeroconf | affected |
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No vendor fix or workaround currently provided.
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Tracking
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| Source | ID | Title |
|---|---|---|
 Github GHSA |
GHSA-9663-mqmp-p9mm | python-zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood |
Fri, 17 Jul 2026 18:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.12, AsyncListener.handle_query_or_defer retained every truncated TC-bit incoming query, each up to _MAX_MSG_ABSOLUTE = 8966 bytes, in self._deferred[addr] and armed a per-address timer in self._timers[addr] without capping the per-address list or distinct addr keys, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to spoof sources, grow _deferred and _timers, and cause memory exhaustion and quadratic CPU burn. This issue is fixed in version 0.149.12. | |
| Title | Zeroconf: Unbounded TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood | |
| Weaknesses | CWE-770 | |
| References |
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| Metrics |
cvssV3_1
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-17T19:21:38.396Z
Reserved: 2026-05-20T18:15:53.578Z
Link: CVE-2026-48045
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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