{"id":"CVE-2020-5205","aliases":["GHSA-v2wf-c3j6-wpvw"],"url":"https://o3.security/vulnerability/CVE-2020-5205","summary":"Session fixation","details":"In Pow (Hex package) before 1.0.16, the use of Plug.Session in Pow.Plug.Session is susceptible to session fixation attacks if a persistent session store is used for Plug.Session, such as Redis or a database. Cookie store, which is used in most Phoenix apps, doesn't have this vulnerability.","published":"2020-01-09T02:15:13.340Z","modified":"2026-07-09T01:30:13.372583Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"},"epss":{"score":0.0077,"percentile":0.52494,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Hex","name":"pow","fixedVersion":"1.0.16"}],"fix":{"url":"https://github.com/danschultzer/pow/commit/578ffd3d8bb8e8a26077b644222186b108da474f","label":"danschultzer/pow@578ffd3"},"references":[{"type":"ADVISORY","url":"https://github.com/danschultzer/pow/blob/master/CHANGELOG.md#v1016-2020-01-07"},{"type":"ADVISORY","url":"https://github.com/danschultzer/pow/security/advisories/GHSA-v2wf-c3j6-wpvw"},{"type":"FIX","url":"https://github.com/danschultzer/pow/commit/578ffd3d8bb8e8a26077b644222186b108da474f"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T01:30:13.372583Z"}}