CVE-2019-20477 – pyyaml

Package

Manager: pip
Name: pyyaml
Vulnerable Version: >=5.1 <5.2

Severity

Level: Critical

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS: 0.00456 pctl0.63009

Details

Deserialization of Untrusted Data in PyYAML PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load and load_all functions because of a class deserialization issue, e.g., Popen is a class in the subprocess module. NOTE: this issue exists because of an incomplete fix for CVE-2017-18342.

Metadata

Created: 2021-04-20T16:40:42Z
Modified: 2024-10-25T21:15:15Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-3pqx-4fqf-j49f/GHSA-3pqx-4fqf-j49f.json
CWE IDs: ["CWE-502"]
Alternative ID: GHSA-3pqx-4fqf-j49f
Finding: F096
Auto approve: 1