CVE-2026-21862 (GCVE-0-2026-21862)

Vulnerability from cvelistv5 – Published: 2026-02-03 16:06 – Updated: 2026-02-03 17:10
VLAI
Title
RustFS sourceIp bypass via spoofed X-Forwarded-For/Real-IP headers
Summary
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.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
SSVC
Exploitation: poc Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-03 17:10 UTC
CWE
  • CWE-290 - Authentication Bypass by Spoofing
Assigner
GitHub_M CNA
References
Impacted products
Vendor Product Version
rustfs rustfs Affected: < alpha.78
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