Rhonabwy 0.9.99 through 1.1.x before 1.1.7 doesn't check the RSA private key length before RSA-OAEP decryption. This allows attackers to cause a Denial of Service via a crafted JWE (JSON Web Encryption) token.
https://github.com/babelouest/rhonabwy/commit/dd528b3aabd13863f855a68e76966e4e019fc399