yaml

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Uncaught Exception in yaml

Uncaught Exception in GitHub repository eemeli/yaml starting at version 2.0.0-5 and prior to 2.2.2.

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yaml is vulnerable to Stack Overflow via deeply nested YAML collections

Parsing a YAML document with `yaml` may throw a RangeError due to a stack overflow. The node resolution/composition phase uses recursive function calls without a depth bound. An attacker who can supply YAML for parsing can trigger a `RangeError: Maximum call stack size exceeded` with a small payload (~2–10 KB). The `RangeError` is not a `YAMLParseError`, so applications that only catch YAML-specific errors will encounter an unexpected exception type. Depending on the host application's exception handling, this can fail requests or terminate the Node.js process. Flow sequences allow deep nesting with minimal bytes (2 bytes per level: one `[` and one `]`). On the default Node.js stack, appr…