Disclosure summary
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.
Source-reported weakness categories
CWE-330, CWE-682
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2020-14422
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| python | python | * {"versionStartIncluding":"3.8.0","versionEndExcluding":"3.8.4"} |
| opensuse | leap | 15.1 |
| opensuse | leap | 15.2 |
| fedoraproject | fedora | 31 |
| fedoraproject | fedora | 32 |
| oracle | enterprise_manager_ops_center | 12.4.0.0 |
Original records & references
- NIST NVD record
- CVE Program record
- bugs.python.org — Vendor Advisory
- github.com — Issue Tracking, Third Party Advisory
- lists.debian.org — Third Party Advisory
- lists.debian.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- security.gentoo.org — Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.oracle.com — Third Party Advisory
- bugs.python.org — Vendor Advisory
- github.com — Issue Tracking, Third Party Advisory
- lists.debian.org — Third Party Advisory
- lists.debian.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- lists.fedoraproject.org
- security.gentoo.org — Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.oracle.com — Third Party Advisory
PUBLISHED 2020-06-18T10:15:11-04:00
MODIFIED 2026-10-08T17:17:23-04:00
INGESTED 2026-10-10T20:50:19-04:00