{"cve":"CVE-2022-32148","nvd":{"published":"2022-08-10T20:15:47.133","modified":"2026-06-17T04:46:45.730","status":"Modified","description":"Improper exposure of client IP addresses in net/http before Go 1.17.12 and Go 1.18.4 can be triggered by calling httputil.ReverseProxy.ServeHTTP with a Request.Header map containing a nil value for the X-Forwarded-For header, which causes ReverseProxy to set the client IP as the value of the X-Forwarded-For header.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":[],"references":["https://go.dev/cl/412857","https://go.dev/issue/53423","https://go.googlesource.com/go/+/b2cc0fecc2ccd80e6d5d16542cc684f97b3a9c8a","https://groups.google.com/g/golang-announce/c/nqrv9fbR0zE","https://pkg.go.dev/vuln/GO-2022-0520"],"products":["golang:go"],"source":"nvd","synced_at":"2026-10-19T21:34:18.502168378+00:00"},"epss":{"cve":"CVE-2022-32148","score":0.01517,"percentile":0.74555,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GO-2022-0520","url":"https://osv.dev/vulnerability/GO-2022-0520","summary":"Exposure of client IP addresses in net/http","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"stdlib","purl":"pkg:golang/stdlib","ranges":["<1.17.12",">=1.18.0-0 <1.18.4"],"fixed":["1.17.12","1.18.4"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}