CVE-2026-21862

HIGH

rustfs < 1.0.0-alpha.78 - Authentication Bypass via Spoofed X-Forwarded-For Header

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 7.5
EPSS 0.0021
EPSS Percentile 11.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-290
Status published
Products (2)
crates.io/rustfs 0 - 1.0.0-alpha.78crates.io
rustfs/rustfs 1.0.0 alpha1 (49 CPE variants)
Published Feb 03, 2026
Tracked Since Feb 18, 2026