{"id":"CVE-2020-28724","aliases":["GHSA-3p3h-qghp-hvh2","PYSEC-2020-157"],"url":"https://o3.security/vulnerability/CVE-2020-28724","summary":"Open Redirect in werkzeug","details":"Open redirect vulnerability in werkzeug before 0.11.6 via a double slash in the URL.","published":"2020-11-18T15:15:12.990Z","modified":"2026-07-08T20:42:22.568107Z","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":{"score":0.01681,"percentile":0.74787,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"werkzeug","fixedVersion":"0.11.6"}],"fix":{"url":"https://github.com/pallets/werkzeug/pull/890/files","label":"pallets/werkzeug#890"},"references":[{"type":"REPORT","url":"https://github.com/pallets/flask/issues/1639"},{"type":"REPORT","url":"https://github.com/pallets/werkzeug/issues/822"},{"type":"FIX","url":"https://github.com/pallets/werkzeug/pull/890/files"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:42:22.568107Z"}}