CVE-2026-114437 (GCVE-0-2026-114437)

Vulnerability from cvelistv5 – Published: 2026-10-21 13:52 – Updated: 2026-10-21 17:19
VLAI
Title
Chi Client IP Spoofing in ClientIPFromXFF via X-Forwarded-For
Summary
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.
Severity
4.8 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
6.3 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-21 15:16 UTC
CWE
  • CWE-348 - Use of Less Trusted Source
Assigner
tenable CNA under the mitre root
CNA scorecard C 71/100 over 52 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
go-chi chi Affected: 0 , < 5.4.0 (semver)
guessed Create a notification for this product.
Date Public
2026-10-21 15:00
Credits
Joshua Martinelle
Show details on NVD website
To clipboard 

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