Sensitive Information Leak in RustFS Object Storage System by Rust
CVE-2026-45040

5.3MEDIUM

Key Information:

Vendor

Rustfs

Status
Rustfs
Vendor
CVE Published:
28 May 2026

What is CVE-2026-45040?

RustFS, a distributed object storage system developed using Rust, contains a vulnerability where sensitive information, including Session Tokens, Secret Access Keys, and complete JWT claims, could be exposed in clear text within the server logs when executed with the RUST_LOG=debug option. This issue, present in versions prior to 1.0.0-beta.2, poses significant risks for user data security and necessitates immediate updates to mitigate potential data breaches.

Affected Version(s)

rustfs < 1.0.0-beta.2

References

https://github.com/rustfs/rustfs/security/advisories/GHSA...
x_refsource_CONFIRM

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.