{"id":"CVE-2026-114437","revision":"35555076682940a2b712e5880e8fd8b3","records":[{"revision":"35555076682940a2b712e5880e8fd8b3","observedAt":"2026-10-25T05:17:18.597+00:00","statement":{"source":"nvd","id":"CVE-2026-114437","aliases":[],"title":"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 reac…","description":"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.\n\nThis issue affects chi before 5.4.0.","state":0,"publishedAt":"2026-10-21T14:17:14.69+00:00","modifiedAt":"2026-10-21T18:17:27.563+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · vulnreport@tenable.com · Secondary","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":6.3,"severity":"MEDIUM"},{"system":"CVSS 3.1 · vulnreport@tenable.com · Secondary","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","score":4.8,"severity":"MEDIUM"}],"references":["https://github.com/go-chi/chi/security/advisories/GHSA-j6qf-3m9c-vwj3","https://www.tenable.com/security/research/tra-2026-66"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-114437","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-348"],"productCriteria":[],"sourceDates":{"published":"2026-10-21T14:17:14.690","lastModified":"2026-10-21T18:17:27.563"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-114437","identifiers":["CVE-2026-114437"]},"retained":false,"historicalAffected":[]}],"coverage":[]}