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CVE-2020-14343 PUBLISHED

A vulnerability was discovered in the PyYAML library in versions before 5.4, 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. This flaw allows an attacker to execute arbitrary code on the system by abusing the python/object/new constructor. This flaw is due to an incomplete fix for CVE-2020-1747.

EPSS 13.70% · 94.2th percentile

Risk Scores

EPSS Score
13.70%
94.2th percentile

Affected Products

VendorProductVersions
Ubuntu:20.04:LTSpyyaml0, 5.1.2-1build1, 5.3-1ubuntu2

Timeline

References

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