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RustFS CVE-2026-45040

| EUVD-2026-32997 MEDIUM
Cleartext Storage of Sensitive Information (CWE-312)
2026-05-28 GitHub_M
Information Disclosure Rustfs
5.3
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

3
Patch available
May 28, 2026 - 20:02 EUVD
Analysis Generated
May 28, 2026 - 19:29 vuln.today
CVSS changed
May 28, 2026 - 19:22 NVD
5.3 (MEDIUM)

DescriptionNVD

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, RustFS suffers from sensitive information leakage in log outputs. When the server is run with RUST_LOG=debug sensitive credentials including SessionToken (JWT), SecretAccessKey, and full JWT claims are printed in plaintext to the server logs. This vulnerability is fixed in 1.0.0-beta.2.

AnalysisAI

RustFS distributed object storage (all versions prior to 1.0.0-beta.2) leaks sensitive credentials - including SessionTokens (JWT), SecretAccessKeys, and full JWT claim payloads - in plaintext to server logs when debug-level logging is active. Any authenticated party with read access to those log files can harvest live credentials for lateral movement or unauthorized storage access. …

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CVE-2026-45040 vulnerability details – vuln.today
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