Vulnerability · Published Dec 30, 2025 · Assigned by GitHub_M
CVE-2025-68926RustFS has a gRPC Hardcoded Token Authentication Bypass
Critical 9.8
In plain English
A critical-severity hard-coded credentials in rustfs from rustfs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 31.9% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
RustFS is a distributed object storage system built in Rust. In versions prior to 1.0.0-alpha.78, RustFS implements gRPC authentication using a hardcoded static token `"rustfs rpc"` that is publicly exposed in the source code repository, hardcoded on both client and server sides, non-configurable with no mechanism for token rotation, and universally valid across all RustFS deployments. Any attacker with network access to the gRPC port can authenticate using this publicly known token and execute privileged operations including data destruction, policy manipulation, and cluster configuration changes. Version 1.0.0-alpha.78 contains a fix for the issue.
Affected products (as reported)
Weakness: CWE-798, CWE-287 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://github.com/rustfs/rustfs/security/advisories/GHSA-h956-rh7x-ppgj x_refsource_CONFIRM