CVE-2026-114437

In the Golang Chi web framework, the ClientIPFromXFF middleware skips any X-Forwarded-For entry in a configured trusted CIDR but never verifies that the direct TCP peer in http.Request.RemoteAddr belongs to that CIDR. A client that can reach the Go server directly can therefore append a trusted-looking proxy address and choose the client IP returned by middleware.GetClientIP. This issue affects chi before 5.4.0.

CVSS v3 4.8 MEDIUM

4.8^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/go-chi/chi/security/advisories/GHSA-j6qf-3m9c-vwj3
https://www.tenable.com/security/research/tra-2026-66

Configurations

No configuration.

History

21 Oct 2026, 14:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-21 14:17

Updated : 2026-10-21 18:17

NVD link : CVE-2026-114437

Mitre link : CVE-2026-114437

CVE.ORG link : CVE-2026-114437

JSON object : View

Products Affected

No product.

CWE

CWE-348

Use of Less Trusted Source

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