{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47183","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-18T22:07:37.434Z","datePublished":"2026-07-17T18:22:59.803Z","dateUpdated":"2026-07-17T23:15:36.656Z"},"containers":{"cna":{"title":"Zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion","problemTypes":[{"descriptions":[{"cweId":"CWE-400","lang":"en","description":"CWE-400: Uncontrolled Resource Consumption","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/python-zeroconf/python-zeroconf/security/advisories/GHSA-phvx-9mgw-67r5","tags":["x_refsource_CONFIRM"],"url":"https://github.com/python-zeroconf/python-zeroconf/security/advisories/GHSA-phvx-9mgw-67r5"},{"name":"https://github.com/python-zeroconf/python-zeroconf/issues/1714","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/issues/1714"},{"name":"https://github.com/python-zeroconf/python-zeroconf/pull/1717","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/pull/1717"},{"name":"https://github.com/python-zeroconf/python-zeroconf/commit/95561e28b24922358f1991e38e3a86d70d72dcec","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/commit/95561e28b24922358f1991e38e3a86d70d72dcec"},{"name":"https://github.com/python-zeroconf/python-zeroconf/releases/tag/0.149.6","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/releases/tag/0.149.6"}],"affected":[{"vendor":"python-zeroconf","product":"python-zeroconf","versions":[{"version":"< 0.149.6","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-17T18:22:59.803Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-phvx-9mgw-67r5","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T21:08:53.994450Z","id":"CVE-2026-47183","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-17T23:15:36.656Z"}}]}}