An XML External Entity (XXE) issue exists in OSCI-Transport 1.2 as used in OSCI Transport Library 1.6.1 (Java) and OSCI Transport Library 1.6 (.NET), exploitable by sending a crafted standard-conforming OSCI message from within the infrastructure.

A Padding Oracle exists in OSCI-Transport 1.2 as used in OSCI Transport Library 1.6.1 (Java) and OSCI Transport Library 1.6 (.NET). Under an MITM condition within the OSCI infrastructure, an attacker needs to send crafted protocol messages to analyse the CBC mode padding in order to decrypt the transport encryption.

Signature Wrapping exists in OSCI-Transport 1.2 as used in OSCI Transport Library 1.6.1 (Java) and OSCI Transport Library 1.6 (.NET). An attacker with access to unencrypted OSCI protocol messages must send crafted protocol messages with duplicate IDs.