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name: deserialization-python
domain: web
triggers:
languages: [python]
severity_focus: [P1, P2, P3]
---
# deserialization-python
Python deser: pickle (any unpickle of untrusted data is RCE), PyYAML yaml.load() pre-5.1, marshal, jsonpickle, dill. Detection: any *.load(...) on user-controlled bytes.
## Detection checklist
- enumerate exposure
- match canonical sinks
- confirm reproducibility
- map to CWE / OWASP / CVSS
## Exploitation primitives
- reproduce in lab
- minimise the PoC
- assess blast radius
## Reporting fingerprint
- include affected version range
- include suggested fix snippet
- include CVSS 3.1 vector
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