A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The affected products are vulnerable to an "Exposure of Sensitive Information to an Unauthorized Actor" vulnerability by leaking sensitive data in the HTTP Referer.
https://cert-portal.siemens.com/productcert/pdf/ssa-363821.pdf