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CVE-2026-47183

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-depende
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:db2f9d91756ead940ca68c2e06ebc63dc561e0e8abcfef5bfe164a659569800b
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":"< 0.149.6"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /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_v5cvss
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/python-zeroconf/python-zeroconf/commit/95561e28b24922358f1991e38e3a86d70d72dcec","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/commit/95561e28b24922358f1991e38e3a86d70d72dcec"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/references/3
{"name":"https://github.com/python-zeroconf/python-zeroconf/issues/1714","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/issues/1714"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/references/1
{"name":"https://github.com/python-zeroconf/python-zeroconf/pull/1717","tags":["x_refsource_MISC"],"url":"https://github.com/python-zeroconf/python-zeroconf/pull/1717"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/references/2
{"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"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /containers/cna/references/4
{"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"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:3aaff29797ecdea2880ebcba4bbc53bec5ceb491052b321bd5df58cf61e0ced6 · sha256:aaa066d60fc6855c… · /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.

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