CVE-2020-1747 – pyyaml

Package

Manager: pip
Name: pyyaml
Vulnerable Version: >=5.1b7 <5.3.1

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: 0.02593 pctl0.85042

Details

Improper Input Validation in PyYAML A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.

Metadata

Created: 2021-04-20T16:14:24Z
Modified: 2024-10-31T16:17:34Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-6757-jp84-gxfx/GHSA-6757-jp84-gxfx.json
CWE IDs: ["CWE-20"]
Alternative ID: GHSA-6757-jp84-gxfx
Finding: F184
Auto approve: 1