cvedb.io
CVE-2026-27607
HIGH · CVSS 8.1
EPSS exploitation probability: 0%
Published 2026-02-25T03:16:04.787 · Last modified 2026-06-17T10:27:23.027

Summary

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.

Affected products

rustfs — rustfs

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.