CVE-2026-45039

RustFS prior to 1.0.0-beta.2 uses an HMAC-SHA256 signature for internode RPC authentication that falls back to DEFAULT_SECRET_KEY = "rustfsadmin" if neither RUSTFS_RPC_SECRET nor the global S3 secret key is configured. The vulnerability arises from get_shared_secret() in crates/ecstore/src/rpc/ht...