pyyaml@5.4b1 vulnerabilities

YAML parser and emitter for Python

Known vulnerabilities in the pyyaml package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability	Vulnerable Version
C Arbitrary Code Execution Affected versions of this package are vulnerable to Arbitrary Code Execution. It processes untrusted YAML files through the `full_load` method or with the `FullLoader` loader. This is due to an incomplete fix for CVE-2020-1747. How to fix Arbitrary Code Execution? Upgrade `PyYAML` to version 5.4 or higher.	[5.1b1,5.4)