CVE-2026-48045

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Source
https://cve.org/CVERecord?id=CVE-2026-48045
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-48045.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-48045
Aliases
Downstream
Related
Published
2026-07-17T18:26:19Z
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 TC-deferred queue allows LAN-local memory exhaustion via spoofed-source flood
Details

Zeroconf is a pure Python implementation of multicast DNS service discovery. Prior to 0.149.12, AsyncListener.handle_query_or_defer retained every truncated TC-bit incoming query, each up to _MAX_MSG_ABSOLUTE = 8966 bytes, in self._deferred[addr] and armed a per-address timer in self._timers[addr] without capping the per-address list or distinct addr keys, allowing unauthenticated hosts on the local link over UDP/5353 (224.0.0.251 / ff02::fb) to spoof sources, grow _deferred and _timers, and cause memory exhaustion and quadratic CPU burn. This issue is fixed in version 0.149.12.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/48xxx/CVE-2026-48045.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
f4b506645d7ac4c076bd4f59550b36c607932f39
Fixed
b22c8ff19c66c68907d220a4823c0950f4fa93f7
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:paulsm:zeroconf:*:*:*:*:*:python:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.149.12"
        }
    ],
    "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
0.149.10
0.149.11
0.149.2
0.149.3
0.149.4
0.149.5
0.149.6
0.149.7
0.149.8
0.149.9
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-2026-48045.json"