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TI-2026-32891 Aliases CVE-2026-45040

RustFS: Sensitive Information Leakage (SessionToken and SecretAccessKey) in RustFS Logs [Debug Mode]

Priority MEDIUM 57CWE-312Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-312.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00152 4th percentileScored 2026-11-07
Fix Fixed rustfs (rustfs): 1.0.0-beta.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rustfsrustfsbefore 1.0.0-beta.21.0.0-beta.2Patch availableCNA
  • rustfs Vendorrustfs Affected before 1.0.0-beta.2 Fixed in 1.0.0-beta.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:rustfs:rustfs:*:*:*:*:*:*:*:*——rustfs
  • cpe:2.3:a:rustfs:rustfs:*:*:*:*:*:*:*:* Versions — — ·rustfs

Remediation

  • Fix · CNA rustfs (rustfs) Fixed in 1.0.0-beta.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-45040

References

Other 1

  • TI-2025-42382 RustFS has a gRPC Hardcoded Token Authentication Bypass CVSS 3.1CRITICAL 9.8
  • TI-2026-32895 RustFS: Authentication bypass in /profile/cpu and /profile/memory allows unauthenticated access to profiling handlers CVSS 4.0HIGH 8.8
  • TI-2026-32892 RustFS: Hard-coded RSA private key in license verifier permits arbitrary license forgery CVSS 4.0HIGH 8.7
  • TI-2025-42176 RustFS Path Traversal Vulnerability CVSS 4.0HIGH 8.8
  • TI-2026-36822 RustFS Snowball Auto-Extract: Path Traversal allows cross-bucket object injection CVSS 3.1HIGH 8.6
  • TI-2026-32894 RustFS: ImportIam Allows Creation of Backdoor Service Accounts Under Any Parent Including Root CVSS 4.0CRITICAL 9.3
See all 32 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences