CVE-2026-21862: high-severity vulnerability in rustfs
RustFS sourceIp bypass via spoofed X-Forwarded-For/Real-IP headers
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.7epss 0.3%
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.
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
Affected products
rustfs · rustfsRelated CVEs — rustfs
In the same product, most dangerous first.
CVE-2025-68926CRITICALRustFS has a gRPC Hardcoded Token Authentication BypassEPSS 31.9%CVE-2025-68705HIGHRustFS Path Traversal VulnerabilityEPSS 7.3%CVE-2026-27822CRITICALRust has Critical Stored XSS in Preview Modal, leading to Administrative Account TakeoverEPSS 5.1%CVE-2026-22782LOWRustFS RPC signature verification logs shared secretEPSS 0.5%CVE-2026-73284HIGHRustFS: AddServiceAccount Handler Allows Creation of Root-Parent Service AccountsEPSS 0.5%CVE-2026-73285HIGHRustFS: OPA policy plugin omits ExistingObjectTag conditions, allowing tag-based authorization policies to treat tagged objects as untaggedEPSS 0.5%