CVE-2026-55838
Medium · 4.3CVSS
4.3
EPSS
0.3%
Published
Jun 26, 2026
CISA due date
—
The record
RustFS is a distributed object storage system built in Rust. In 1.0.0-beta.7 and earlier, the real-time metrics endpoint at /rustfs/admin/v3/metrics is accessible to any valid IAM user regardless of their assigned policy. Every other admin handler in the codebase calls validate_admin_request to enforce admin-action IAM checks; the MetricsHandler skips this call entirely. A restricted IAM user whose policy grants only access to their own bucket can read server-wide operational metrics including disk I/O statistics, network throughput, scanner cycle timing, and cluster RPC state.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|
Related vulnerabilities
- CVE-2026-96391 Missing Authorization vulnerability in Drupal Webform REST allows Forceful Browsing. CWE-862
- CVE-2026-96380 Missing Authorization vulnerability in Drupal CSS Usage Analyzer allows Forceful Browsing. CWE-862
- CVE-2026-96386 Missing Authorization vulnerability in Drupal Smart Content allows Forceful Browsing. CWE-862
- CVE-2026-87955 Missing Authorization vulnerability in Drupal Ultimate Table Field allows Forceful… CWE-862
- CVE-2026-87954 Missing Authorization vulnerability in Drupal Taxonomy Term Glossary allows Forceful… CWE-862
- CVE-2026-87943 Missing Authorization vulnerability in Drupal SAML SSO - Service Provider allows Forceful… CWE-862
- CVE-2026-84916 Missing Authorization vulnerability in Drupal Islandora allows Forceful Browsing. CWE-862
- CVE-2026-84921 Missing Authorization vulnerability in Drupal Webform Submissions Delete allows Forceful… CWE-862