yaml-rust 0.4.0 and earlier is affected by: Uncontrolled Recursion. The impact is: Denial of service by impossible to catch abort. The component is: YamlLoader::load_from_str function. The attack vector is: Parsing of a malicious YAML document. The fixed version is: 0.4.1 and later.

An issue was discovered in the yaml-rust crate before 0.4.1 for Rust. There is uncontrolled recursion during deserialization.