{"apiVersion":"1.0","identifier":"CVE-2026-72817","description":"go-chi/chi versions 0.9.0 before 5.3.0 contains an IP spoofing vulnerability in the RealIP middleware, which resolves the request source IP (Request.RemoteAddr) using the first IP in the X-Forwarded-For header without validating trusted proxies. A malicious client can prepend a forged IP as the first value of the X-Forwarded-For header to spoof the request source IP, potentially bypassing access controls or falsifying request logs.","publishedAt":"2026-08-14T12:16:44","lastModifiedAt":"2026-08-17T16:17:45","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72817","cvssScore":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","epssProbability":0.0015,"riskScore":0.66,"affectedProduct":"go-chi/chi","affectedVersions":">=0.9.0,<5.3.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72817","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72817","en":"https://www.redsauce.net/en/cves/CVE-2026-72817","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72817","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72817","de":"https://www.redsauce.net/de/cves/CVE-2026-72817","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72817","el":"https://www.redsauce.net/el/cves/CVE-2026-72817"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72817"}}