CVE-2026-21862: Rustfs

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

RustFS is a distributed object storage system built in Rust. Prior to version alpha.78, IP-based access control can be bypassed: get_condition_values trusts client-supplied X-Forwarded-For/X-Real-Ip without verifying a trusted proxy, so any reachable client can spoof aws:SourceIp and satisfy IP-allowlist policies. This issue has been patched in version alpha.78.

Affected products

• Rustfs Rustfs: version 1.0.0 only

Published 2026-02-03. Last modified 2026-06-17.