CVE-2025-55039

CVE-2025-55039 affects Apache Spark prior to 3.4.4, 3.5.2 and 4.0.0. When spark.network.crypto.enabled is true (default false) and spark.network.crypto.cipher is not configured, Spark uses AES/CTR/NoPadding for RPC traffic, enabling encryption without authentication. A MITM could flip bits in cip...