Improper Access Control Affecting pyyaml package, versions [5.1, 5.2)


Severity

Recommended
0.0
critical
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Mature
EPSS
43.04% (98th percentile)

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  • Snyk IDSNYK-PYTHON-PYYAML-550022
  • published19 Feb 2020
  • disclosed19 Feb 2020
  • creditManmeet Singh, Ashish Kukreti

Introduced: 19 Feb 2020

CVE-2019-20477  (opens in a new tab)
CWE-284  (opens in a new tab)

How to fix?

Upgrade PyYAML to version 5.2 or higher.

Overview

Affected versions of this package are vulnerable to Improper Access Control. It 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.

CVSS Scores

version 3.1