CVE-2026-73287CWE-862broken-access-control

CVE-2026-73287

Medium · published August 12, 2026

CVSS v3.1

5.4

EPSS

Percentile

29.4

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 5.4 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0: Not supplied
EPSS: 0.00368 · 29.4th percentile
Weakness: CWE-862 · Missing Authorization
Published: 2026-08-12T19:18Z

References (4)

https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb · [email protected]https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12 · [email protected]https://github.com/rustfs/rustfs/security/advisories/GHSA-g3vq-vv42-f647 · [email protected]https://github.com/rustfs/rustfs/security/advisories/GHSA-g3vq-vv42-f647 · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

12 AUG 14:41Z
RustFS: FTPS MKD bypasses IAM CreateBucket authorization
cvelistv5