{"id":"CVE-2020-12666","aliases":["GHSA-733f-44f3-3frw","GO-2020-0039"],"url":"https://o3.security/vulnerability/CVE-2020-12666","summary":"gopkg.in/macaron.v1 Open Redirect vulnerability","details":"macaron before 1.3.7 has an open redirect in the static handler, as demonstrated by the http://127.0.0.1:4000//example.com/ URL.","published":"2020-05-05T22:15:13.027Z","modified":"2026-07-08T05:55:44.444412141Z","cvss":{"score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Go","name":"gopkg.in/macaron.v1","fixedVersion":"1.3.7"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QEUOHRC4EN4WZ66EVFML2UCV7ZQ63XZ/"},{"type":"ADVISORY","url":"https://github.com/go-macaron/macaron/releases/tag/v1.3.7"},{"type":"EVIDENCE","url":"https://github.com/go-macaron/macaron/issues/198"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:55:44.444412141Z"}}