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Improper Input Validation The advisory has been revoked - it doesn't affect any version of package rh-python38-PyYAML  (opens in a new tab)

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EPSS
5.44% (93rd percentile)

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  • Snyk IDSNYK-RHEL10-RHPYTHON38PYYAML-9837236
  • published28 Apr 2025
  • disclosed2 Mar 2020
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Introduced: 2 Mar 2020

CVE-2020-1747  (opens in a new tab)
CWE-20  (opens in a new tab)

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:10.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rh-python38-PyYAML package and not the rh-python38-PyYAML package as distributed by RHEL.

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.

References