CVE•Published 2020-06-18•Modified 2026-10-14•1 article on news•6 live references•NVD data

CVE-2020-14422Python · Python

Vulnerability data via NVD (ingested)

CVSS v3.1

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 4% of all CVEs

Weaknesses (CWE)

CWE-330Use of Insufficiently Random Values CWE-682Incorrect Calculation

Description

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

Published 2020-06-18

Modified 2026-10-14

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag25,624 hosts

vuln:CVE-2020-14422

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Python Python"

All exposed Python Python instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Python"

HTTP body or banner mentions "Python" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2020-14422