---
id: CVE-2026-73286
title: RustFS is a distributed object storage system built in Rust
summary: >-
  RustFS is a distributed object storage system built in Rust. Prior to
  1.0.0-beta.12, RustFS get_condition_values folds attacker-controlled request
  headers from HeaderMap into server-derived userid, username, principaltype,
  groups, versio…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-863
published: '2026-08-12'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T20:55:04.493'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-73286'
references:
  - url: >-
      https://github.com/rustfs/rustfs/blob/380ed40b471887014fe21d069b61df9eacca074b/.agents/skills/security-advisory-lessons/references/advisory-patterns.md?plain=1#L45
    label: security-advisories@github.com
  - url: >-
      https://github.com/rustfs/rustfs/commit/92f83bfe155d8a3b9cdd903086e5b28d52339efb
    label: security-advisories@github.com
  - url: 'https://github.com/rustfs/rustfs/releases/tag/1.0.0-beta.12'
    label: security-advisories@github.com
  - url: 'https://github.com/rustfs/rustfs/security/advisories/GHSA-6r96-hmgc-726c'
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00238
epssPercentile: 0.15169
ingestedAt: '2026-09-09T21:22:45.531Z'
---

## Overview

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.12, RustFS get_condition_values folds attacker-controlled request headers from HeaderMap into server-derived userid, username, principaltype, groups, versionid, signatureversion, jwt:, and ldap: condition keys, allowing authenticated callers to satisfy identity-based policy conditions. This issue is fixed in version 1.0.0-beta.12.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.