{"cve":"CVE-2021-20199","nvd":{"published":"2021-02-02T19:15:14.000","modified":"2026-06-17T03:33:27.580","status":"Modified","description":"Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N","score":5.9},"cwes":["CWE-346"],"references":["https://bugzilla.redhat.com/show_bug.cgi?id=1919050","https://github.com/containers/podman/issues/5138","https://github.com/containers/podman/pull/9052","https://github.com/rootless-containers/rootlesskit/pull/206","https://bugzilla.redhat.com/show_bug.cgi?id=1919050"],"products":["podman_project:podman"],"source":"nvd","synced_at":"2026-10-19T21:14:10.479542811+00:00"},"epss":{"cve":"CVE-2021-20199","score":0.01159,"percentile":0.67122,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-grh6-q6m2-rh72","url":"https://osv.dev/vulnerability/GHSA-grh6-q6m2-rh72","summary":"Podman Origin Validation Error","modified":"2023-11-08T04:04:35.466645Z","packages":[{"ecosystem":"Go","name":"github.com/containers/podman/v3","purl":"pkg:golang/github.com/containers/podman/v3","ranges":["<3.0.0"],"fixed":["3.0.0"]}]}],"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."]}