CVE-2025-68926 RustFS has a gRPC Hardcoded Token Authentication Bypass
Attackers can bypass gRPC authentication using a hardcoded token to execute privileged operations like data destruction and configuration changes in RustFS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-68926?
CVE-2025-68926 is a critical vulnerability in rustfs, published on 30 Dec 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Which versions are affected by CVE-2025-68926?
2 open source packages ship an affected version, including rustfs. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
rustfs crates.io | From 1.0.0-alpha.13 | 1.0.0-alpha.78 |
rustfs crates.io | From 1.0.0-alpha.13 | 1.0.0-alpha.78 |
Products include Rustfs Rustfs.
How do I fix CVE-2025-68926?
Upgrade rustfs to 1.0.0-alpha.78 or later.
Is CVE-2025-68926 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-68926 exists.
Public exploit code: 3 proofs of concept on GitHub.
Other vulnerabilities in rustfs
- CVE-2026-27822 Rust has Critical Stored XSS in Preview Modal, leading to Administrative Account Takeover
- CVE-2025-68705 RustFS Path Traversal Vulnerability
- CVE-2026-40937 RustFS: Missing admin authorization on notification target endpoints allows unauthenticated configuration of event webhooks
- CVE-2026-27607 RustFS's Missing Post Policy Validation leads to Arbitrary Object Write
- CVE-2026-21862 RustFS sourceIp bypass via spoofed X-Forwarded-For/Real-IP headers
Sources
Also known as GHSA-h956-rh7x-ppgj.