{"id":"CVE-2023-50463","aliases":["GHSA-rxg9-hgq7-8pwx","GO-2023-2394"],"url":"https://o3.security/vulnerability/CVE-2023-50463","summary":"Header spoofing in caddy-geo-ip","details":"The caddy-geo-ip (aka GeoIP) middleware through 0.6.0 for Caddy 2, when trust_header X-Forwarded-For is used, allows attackers to spoof their source IP address via an X-Forwarded-For header, which may bypass a protection mechanism (trusted_proxy directive in reverse_proxy or IP address range restrictions).","published":"2023-12-10T00:00:00Z","modified":"2026-07-15T01:49:00.033990277Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/shift72/caddy-geo-ip","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"https://caddyserver.com/v2"},{"type":"WEB","url":"https://github.com/shift72/caddy-geo-ip/tags"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/50xxx/CVE-2023-50463.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50463"},{"type":"REPORT","url":"https://github.com/shift72/caddy-geo-ip/issues/4"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-15T01:49:00.033990277Z"}}