Is CVE-2026-73287 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-73287?

CVE-2026-73287 has a CVSS v3 severity of MEDIUM (5.4).

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CVE-2026-73287

Description

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS handles FTPS MKD in FtpsDriver::mkd in crates/protocols/src/ftps/driver.rs by calling storage.create_bucket without authorize_operation for S3Action::CreateBucket, allowing authenticated FTPS users denied s3:CreateBucket to create buckets. This issue is fixed in version 1.0.0-beta.12.