{"apiVersion":"1.0","identifier":"CVE-2026-72815","description":"go-chi chi versions >= 5.2.1 and before 5.3.0 contain an IP spoofing vulnerability in the RealIP middleware, which blindly trusts the first (leftmost) value of the X-Forwarded-For HTTP header. A remote attacker can bypass IP-based access control lists and rate-limiting mechanisms, and forge log entries, by supplying a spoofed IP address in the X-Forwarded-For header. The issue is fixed in version 5.3.0.","publishedAt":"2026-08-14T12:16:44","lastModifiedAt":"2026-08-18T02:17:27","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72815","cvssScore":6.9,"cvssVector":"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/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","epssProbability":0.00397,"riskScore":0.71,"affectedProduct":"chi","affectedVersions":">=5.2.1,<5.3.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-72815","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-72815","en":"https://www.redsauce.net/en/cves/CVE-2026-72815","fr":"https://www.redsauce.net/fr/cves/CVE-2026-72815","pt":"https://www.redsauce.net/pt/cves/CVE-2026-72815","de":"https://www.redsauce.net/de/cves/CVE-2026-72815","sk":"https://www.redsauce.net/sk/cves/CVE-2026-72815","el":"https://www.redsauce.net/el/cves/CVE-2026-72815"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-72815"}}