CVE-2026-47183

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Source
https://cve.org/CVERecord?id=CVE-2026-47183
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47183.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-47183
Aliases
Downstream
Related
Published
2026-07-17T18:22:59Z
Modified
2026-08-19T03:48:17Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Zeroconf: Unbounded exception-dedup state retains packet buffers via traceback frame locals, enabling LAN-local memory exhaustion
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47183.json"
}
References

Affected packages

Git / github.com/python-zeroconf/python-zeroconf

Affected ranges

Type
GIT
Repo
https://github.com/python-zeroconf/python-zeroconf
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
9683fe6ade7ee080e161fb30c7325024d1d3e02f
Fixed
95561e28b24922358f1991e38e3a86d70d72dcec
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:paulsm:zeroconf:*:*:*:*:*:python:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.149.6"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

0.*
0.100.0
0.101.0
0.102.0
0.103.0
0.104.0
0.105.0
0.106.0
0.107.0
0.108.0
0.109.0
0.110.0
0.111.0
0.112.0
0.113.0
0.114.0
0.115.0
0.115.1
0.115.2
0.116.0
0.117.0
0.118.0
0.118.1
0.119.0
0.120.0
0.121.0
0.122.0
0.122.1
0.122.2
0.122.3
0.123.0
0.124.0
0.125.0
0.126.0
0.127.0
0.128.0
0.128.1
0.128.2
0.128.3
0.128.4
0.128.5
0.129.0
0.13
0.130.0
0.131.0
0.132.0
0.132.1
0.132.2
0.133.0
0.134.0
0.135.0
0.136.0
0.136.1
0.136.2
0.137.0
0.137.1
0.137.2
0.138.0
0.138.1
0.139.0
0.14
0.140.0
0.140.1
0.141.0
0.142.0
0.143.0
0.143.1
0.144.0
0.144.1
0.144.2
0.144.3
0.145.0
0.145.1
0.146.0
0.146.1
0.146.2
0.146.3
0.146.4
0.146.5
0.147.0
0.147.1
0.147.2
0.147.3
0.147.4
0.148.0
0.149.0
0.149.1
0.149.2
0.149.3
0.149.4
0.149.5
0.15
0.15.1
0.16
0.17.0
0.17.1
0.17.2
0.17.3
0.17.4
0.17.5
0.17.6
0.17.7
0.18.0
0.19.0
0.19.1
0.20.0
0.21.0
0.21.1
0.21.2
0.21.3
0.22.0
0.23.0
0.24.0
0.24.1
0.24.2
0.24.3
0.24.4
0.24.5
0.25.0
0.25.1
0.26.0
0.26.1
0.26.3
0.27.0
0.27.1
0.28.0
0.28.1
0.28.2
0.28.3
0.28.4
0.28.5
0.28.6
0.28.7
0.28.8
0.29.0
0.32.0
0.32.0b1
0.32.0b2
0.32.0b3
0.32.0b4
0.32.0b5
0.32.0b6
0.32.0rc1
0.32.0rc2
0.32.0rc3
0.32.0rc4
0.32.0rc5
0.32.0rc6
0.32.0rc7
0.32.1
0.33.0
0.33.1
0.33.2
0.33.3
0.33.4
0.34.0
0.34.1
0.34.2
0.34.3
0.35.0
0.35.1
0.36.0
0.36.1
0.36.10
0.36.11
0.36.12
0.36.13
0.36.2
0.36.3
0.36.4
0.36.5
0.36.6
0.36.7
0.36.8
0.36.9
0.37.0
0.38.0
0.38.1
0.38.2
0.38.3
0.38.4
0.38.5
0.38.6
0.38.7
0.39.0
0.39.1
0.39.2
0.39.3
0.39.4
0.39.5
0.40.0
0.40.1
0.41.0
0.42.0
0.43.0
0.44.0
0.45.0
0.46.0
0.47.0
0.47.1
0.47.2
0.47.3
0.47.4
0.48.0
0.49.0
0.50.0
0.51.0
0.52.0
0.53.0
0.53.1
0.54.0
0.55.0
0.56.0
0.57.0
0.58.0
0.58.1
0.58.2
0.59.0
0.60.0
0.61.0
0.62.0
0.63.0
0.64.0
0.64.1
0.65.0
0.66.0
0.67.0
0.68.0
0.68.1
0.69.0
0.70.0
0.71.0
0.71.1
0.71.2
0.71.3
0.71.4
0.71.5
0.72.0
0.72.1
0.72.2
0.72.3
0.73.0
0.74.0
0.75.0
0.76.0
0.77.0
0.78.0
0.79.0
0.80.0
0.81.0
0.82.0
0.82.1
0.83.0
0.83.1
0.84.0
0.85.0
0.86.0
0.87.0
0.88.0
0.89.0
0.90.0
0.91.0
0.91.1
0.92.0
0.93.0
0.93.1
0.94.0
0.95.0
0.96.0
0.97.0
0.98.0
0.99.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47183.json"