CVE-2026-21862 — RustFS sourceIp bypass via spoofed X-Forwarded-For/Real-IP headers

CVE-2026-21862

RustFS sourceIp bypass via spoofed X-Forwarded-For/Real-IP headers PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
rustfs / rustfs	affected < alpha.78

CWE

CWE-290

References

https://github.com/rustfs/rustfs/security/advisories/GHSA-fc6g-2gcp-2qrq

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.