CRITICALCWE-436
PARSE-009 Polyglot Payload (JSON+YAML+Markdown)
Parser Differential: Exploits differences in how parsers (JSON, YAML, markdown) interpret the same input to bypass security controls
Description
Crafts a polyglot payload that is valid in multiple formats, parsed differently by each, with the malicious interpretation hidden in one format
Remediation
Enforce a single input format per endpoint. Validate that input conforms to exactly one expected format. Reject ambiguous inputs that could be valid in multiple formats.