{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-47184","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-18T22:07:37.434Z","datePublished":"2026-07-17T18:25:07.387Z","dateUpdated":"2026-07-21T01:50:36.488Z"},"containers":{"cna":{"title":"Zeroconf: Unbounded DNS record cache allows LAN-local memory exhaustion via multicast flood","problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"CWE-770: Allocation of Resources Without Limits or Throttling","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-rfg2-pjw2-56x2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/python-zeroconf/python-zeroconf/security/advisories/GHSA-rfg2-pjw2-56x2"},{"name":"https://github.com/python-zeroconf/python-zeroconf/issues/1715","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/issues/1715"},{"name":"https://github.com/python-zeroconf/python-zeroconf/pull/1718","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/pull/1718"},{"name":"https://github.com/python-zeroconf/python-zeroconf/commit/0ad3f37b5b852b8f614d322283d148efb2cef6e4","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/commit/0ad3f37b5b852b8f614d322283d148efb2cef6e4"},{"name":"https://github.com/python-zeroconf/python-zeroconf/releases/tag/0.149.7","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/releases/tag/0.149.7"}],"affected":[{"vendor":"python-zeroconf","product":"python-zeroconf","versions":[{"version":"< 0.149.7","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-17T18:25:07.387Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-rfg2-pjw2-56x2","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-21T01:50:24.015459Z","id":"CVE-2026-47184","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":"2026-07-21T01:50:36.488Z"}}]}}