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CVE-2026-27607

RustFS's Missing Post Policy Validation leads to Arbitrary Object Write

概要

RustFS's Missing Post Policy Validation leads to Arbitrary Object Write

原文の説明

取得元が公開している説明をそのまま載せています (多くは英語)。

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.

出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV

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