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CVE-2025-68926

RustFS has a gRPC Hardcoded Token Authentication Bypass

Published: Dec 30, 2025Updated: Jan 16, 2026 Sources: CVE List NVD GHSA BDUCWE-287
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
29.0%
Top 2.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-287CWE-798

Affected Products

rustfsrustfs
Library
OSS Libraries / generic-library
RustFSСообщество свободного программного обеспечения
On-prem
Operating Systems / linux-distro
rustfscrates.ioOSS Libraries
rustfsoss-projectOSS Librariesaka rustfs
сообщество свободного программного обеспеченияoss-projectOperating Systemsaka сообщество свободного программного обеспечения, fsf
crates.iopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

3 techniques
Credential Access
Initial Access
View detailed technique mapping

References

https://github.com/rustfs/rustfs/security/advisories/GHSA-h956-rh7x-ppgj
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-68926
nvd.nist.gov
https://github.com/rustfs/rustfs
github.com
and 1 more references View all →

Timeline

Published
Dec 30, 2025
Last Updated
Jan 16, 2026

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