CVE-2026-27607

HIGH

8.1

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.

Details CVE

Score CVSS v3.18.1

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie2/25/2026

Derniere modification2/25/2026

Sourcenvd

Observations honeypot0

Produits affectes

rustfs:rustfs

Faiblesses (CWE)

CWE-20CWE-863CWE-863

References

https://github.com/rustfs/rustfs/security/advisories/GHSA-w5fh-f8xh-5x3p(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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