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-qc2x-6f54-m6h9 | zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet |
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 0.149.16, _read_character_string and _read_string in src/zeroconf/_protocol/incoming.py advanced self.offset by attacker-declared RDLENGTH without checking it against self._data_len, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to send a TXT, HINFO, or A/AAAA record with rdlength=65535 and seed DNSCache and ServiceInfo.properties with truncated, attacker-shaped key/value or address records. This issue is fixed in version 0.149.16. | |
| Title | Zeroconf: Unvalidated rdlength in record payload readers allows LAN-local cache corruption via crafted mDNS packet | |
| Weaknesses | CWE-130 | |
| References |
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| Metrics |
cvssV4_0
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Subscriptions
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-07-17T18:28:21.417Z
Reserved: 2026-05-21T15:33:08.291Z
Link: CVE-2026-48487
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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