AUGUST 15, 2026
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Case File

CVE-2026-73290

MEDIUM · CVSS 5.3 EPSS 0.24% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-12 · Last synced 2026-08-15

CyberRota Analysis

AI-Generated

RustFS versions prior to 1.0.0-beta.12 are vulnerable to an access control bypass that allows anonymous users to list object versions, potentially exposing sensitive metadata despite restrictions on direct object access. This vulnerability arises from a failure to enforce bucket policies properly, which could lead to unauthorized data exposure. Organizations using affected versions should prioritize upgrading to the fixed version to mitigate the risk of data leakage.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

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CVE
CVE-2026-73290
Severity
MEDIUM
CVSS
5.3
EPSS
0.24%

Original NVD Description

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, an anonymous ListObjectVersions request in rustfs/src/storage/access.rs that lacks a direct bucket-policy grant falls back to an s3:ListBucket check and returns before the policy_allowed path applies deny_anonymous_table_data_plane_if_needed and RestrictPublicBuckets, so a bucket that permits anonymous listing can continue exposing version listings after an operator enables the public-access control. The bypass affects GET /<bucket>?versions= and can disclose object version metadata even though equivalent GetObject requests are denied. This issue is fixed in version 1.0.0-beta.12.