High severityPythonInsecure DeserializationHIGH confidence
YAML Unsafe Load
yaml.load() without SafeLoader can instantiate arbitrary Python objects and execute code (CWE-502).
Standards mapping
- OWASP Top 10
- A08:2021 - Software and Data Integrity Failures
- OWASP ASVS
- V5.5.3 (L1)
Vulnerable vs. safe
Flagged by this check
return yaml.load(text)Passes - the safe pattern
return yaml.safe_load(text)Why it matters & how to fix it
yaml.load() without SafeLoader can instantiate arbitrary Python objects and execute code (CWE-502). Use yaml.safe_load(...) or yaml.load(data, Loader=yaml.SafeLoader).
References
Rule ID integsec-python-yaml-unsafe-load - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.
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