Description

RustFS is a distributed object storage system built in Rust. In versions 1.0.0-alpha.56 through 1.0.0-alpha.82, RustFS does not validate policy conditions in presigned POST uploads (PostObject), allowing attackers to bypass content-length-range, starts-with, and Content-Type constraints. This enables unauthorized file uploads exceeding size limits, uploads to arbitrary object keys, and content-type spoofing, potentially leading to storage exhaustion, unauthorized data access, and security bypasses. Version 1.0.0-alpha.83 fixes the issue.

INFO

Published Date :

2026-02-25T02:10:28.086Z

Last Modified :

2026-02-25T20:06:03.487Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27607 vulnerability.

Vendors Products
Rustfs
  • Rustfs
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27607.

URL Resource
https://github.com/rustfs/rustfs/security/advisories/GHSA-w5fh-f8xh-5x3p cve-icon cve-icon
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CVSS Vulnerability Scoring System

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