CVE-2026-21862

The record

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 packages

Related vulnerabilities

• GHSA-fc6g-2gcp-2qrq RustFS has SourceIp bypass via spoofed X-Forwarded-For/Real-IP headers Same vulnerability
• GHSA-mm2q-qcmx-gw4w RustFS: ListServiceAccount authorizes against wrong admin action, enabling cross-user… Also affects rustfs
• CVE-2026-40937 RustFS is a distributed object storage system built in Rust. Also affects rustfs
• GHSA-pfcq-4gjr-6gjm RustFS: Missing admin authorization on notification target endpoints allows… Also affects rustfs
• GHSA-mx42-j6wv-px98 RustFS has an authorization bypass in multipart UploadPartCopy enables cross-bucket… Also affects rustfs
• CVE-2026-39360 RustFS is a distributed object storage system built in Rust. Also affects rustfs
• GHSA-v9fg-3cr2-277j Rust has Critical Stored XSS in Preview Modal, leading to Administrative Account Takeover Also affects rustfs
• GHSA-w5fh-f8xh-5x3p RustFS: Missing Post Policy Validation leads to Arbitrary Object Write Also affects rustfs