critical9.8
CVE-2026-45039
RustFS is a distributed object storage system built in Rust.
Impact
RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, the internode RPC layer authenticates every request with an HMAC-SHA256 signature using a shared secret. The function that produces this secret, get_shared_secret() in crates/ecstore/src/rpc/http_auth.rs, falls back to the public, source-tree-embedded DEFAULT_SECRET_KEY = "rustfsadmin" when neither the RUSTFS_RPC_SECRET environment variable nor the global S3 secret key has been configured. This vulnerability is fixed in 1.0.0-beta.2.
Affected products
| Product | Affected versions |
|---|---|
| Rust. | before 1.0.0-beta.2 |
Versions were read from the advisory text. No structured product data has been published for this record yet.