Using snakeYAML to parse untrusted YAML files may be vulnerable to Denial of Service attacks . If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stack-overflow. Those using Snakeyaml to parse untrusted YAML files may be vulnerable to Denial of Service attacks . If the parser is running on user supplied input, an attacker may supply content that causes the parser to crash by stack overflow. This effect may support a denial of service attack