{"id":"EUVD-2026-58631","revision":"4658dcc9e20d4e18a3521873673e1412","records":[{"revision":"4658dcc9e20d4e18a3521873673e1412","observedAt":"2026-11-09T15:08:43.701+00:00","statement":{"source":"euvd","id":"EUVD-2026-58631","aliases":["CVE-2026-72816","GHSA-xg24-pmhh-m4m9"],"title":"go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAd…","description":"go-chi/chi through 5.2.1 contains an IP spoofing vulnerability in the RealIP middleware (middleware/realip.go). The realIP() function reads client-controlled headers (True-Client-IP, X-Real-IP, and X-Forwarded-For) and overwrites r.RemoteAddr without verifying that the request originated from a trusted proxy. Attackers can supply arbitrary IP addresses in these headers to bypass IP-based access controls, evade rate limiting and geo-IP restrictions, and pollute audit logs. Fixed in 5.3.0.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.9,"severity":null}],"references":["https://github.com/go-chi/chi/security/advisories/GHSA-rjr7-jggh-pgcp","https://www.vulncheck.com/advisories/go-chi-chi-before-ip-spoofing-via-realip-middleware"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-58631","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Aug 14, 2026, 11:35:28 AM","dateUpdated":"Oct 8, 2026, 3:24:31 PM"},"relatedAdvisories":[{"id":"RHSA-2026:49732","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"msrc_CVE-2026-72816","title":"go-chi chi before 5.3.0 IP Spoofing via RealIP Middleware","vulnerabilityIds":["CVE-2026-72816"]},{"id":"openSUSE-SU-2026:21670-1","title":"Security update for cloudflared","vulnerabilityIds":["CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"openSUSE-SU-2026:21918-1","title":"Security update for warewulf4","vulnerabilityIds":["CVE-2026-34986","CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"openSUSE-SU-2026:21645-1","title":"Security update for trivy","vulnerabilityIds":["CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"RHSA-2026:49718","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"RHSA-2026:54420","title":"Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update","vulnerabilityIds":["CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"openSUSE-SU-2026:21653-1","title":"Security update for v2ray-core","vulnerabilityIds":["CVE-2026-27017","CVE-2026-39821","CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]},{"id":"openSUSE-SU-2026:21793-1","title":"Security update for hauler","vulnerabilityIds":["CVE-2026-37236","CVE-2026-41178","CVE-2026-41888","CVE-2026-72815","CVE-2026-72816","CVE-2026-72817"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-58631","identifiers":["EUVD-2026-58631","CVE-2026-72816","GHSA-xg24-pmhh-m4m9"]},"retained":false,"historicalAffected":[]}],"coverage":[]}