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.
OSCI-Transport library version 1.2 for German e-Government suffers from padding oracle, signature wrapping, and XML external entity injection vulnerabilities.