CVE-2026-22782
RustFS RPC signature verification logs shared secret
- State
- Published
- Severity
- 2.9 Low
- Published
- Jan 16, 2026
- Updated
- Jan 16, 2026
- Reserved
- Jan 9, 2026
Description
RustFS is a distributed object storage system built in Rust. From >= 1.0.0-alpha.1 to 1.0.0-alpha.79, invalid RPC signatures cause the server to log the shared HMAC secret (and expected signature), which exposes the secret to log readers and enables forged RPC calls. In crates/ecstore/src/rpc/http_auth.rs, the invalid signature branch logs sensitive data. This log line includes secret and expected_signature, both derived from the shared HMAC key. Any invalidly signed request triggers this path. The function is reachable from RPC and admin request handlers. This vulnerability is fixed in 1.0.0-alpha.80.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 2.9 Low | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P | GitHub_M |
Weaknesses
- CWE-532 Insertion of Sensitive Information into Log File
Affected Products
| Product | Versions |
|---|---|
rustfsrustfs |
|
References
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