CVE-2026-27607

🔴 HIGH

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), allow...

Published
Feb 25, 2026
Last Modified
Feb 25, 2026
Views
19
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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 (27)

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

rustfs - rustfs

Version: 1.0.0

CVSS Scores

CVSS 3.1 8.1
8.1
HIGH
CVSS 2.0 8.1

References

Additional Information

Source
security-advisories@github.com
State
Analyzed

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