Is CVE-2026-39360 actively exploited?

No active exploitation of CVE-2026-39360 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-39360 be exploited remotely?

Yes. CVE-2026-39360 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-39360?

CVE-2026-39360 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-39360

CWE-862Published: April 7, 2026· Updated: Apr 10, 2026

4.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:11.6th

Official Description

RustFS is a distributed object storage system built in Rust. Prior to alpha.90, RustFS contains a missing authorization check in the multipart copy path (UploadPartCopy). A low-privileged user who cannot read objects from a victim bucket can still exfiltrate victim objects by copying them into an attacker-controlled multipart upload and completing the upload. This breaks tenant isolation in multi-user / multi-tenant deployments. This vulnerability is fixed in alpha.90.

NVD Source

Technical Analysis

CVE-2026-39360 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.