CVE Explorer
CVE-2026-47184
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 callbac
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"python-zeroconf","vendor":"python-zeroconf","versions":[{"status":"affected","version":"< 0.149.7"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"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"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/problemTypes/0/descriptions/0
Source references
5 source assertions{"name":"https://github.com/python-zeroconf/python-zeroconf/commit/0ad3f37b5b852b8f614d322283d148efb2cef6e4","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/commit/0ad3f37b5b852b8f614d322283d148efb2cef6e4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/references/3
{"name":"https://github.com/python-zeroconf/python-zeroconf/issues/1715","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/issues/1715"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/references/1
{"name":"https://github.com/python-zeroconf/python-zeroconf/pull/1718","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/pull/1718"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/references/2
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/references/4
{"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"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:5e4d81fa6d86e3cc4d78e7792f5a1c58c22e52a6576abca66c4099224db52bde · sha256:784b46310a2161c1… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.