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Findings

CVE-2020-14422

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a…

Published Jun 18, 2020 · updated Oct 14, 2026 · python python

Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5.10rc1; v3.6.12; v3.7.9; v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1; v3.9.0, v3.9.0b4, v3.9.0b5, v3.9.0rc1, v3.9.0rc2.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 18, 2020 · NIST NVD

    Detected

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5

  2. Oct 14, 2026 · NIST NVD

    Updated

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or IPv6Interface objects, and this attacker can cause many dictionary entries to be created. This is fixed in: v3.5.10, v3.5

Affected

  • cpe fedoraproject/fedora31
  • cpe fedoraproject/fedora32
  • cpe opensuse/leap15.1
  • cpe opensuse/leap15.2
  • cpe oracle/enterprise manager ops center12.4.0.0
  • cpe python/pythonversion unspecified

Sources

  • CVE.orgCVE-2020-14422

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2020-14422

    30-day exploitation probability 12.7%

    first.org
  • NIST NVDCVE-2020-14422

    Lib/ipaddress.py in Python through 3.8.3 improperly computes hash values in the IPv4Interface and IPv6Interface classes, which might allow a remote attacker to cause a denial of service if an application is affected by the performance of a dictionary containing IPv4Interface or I

    nvd.nist.gov

References