{"id":"CVE-2021-39286","aliases":["GHSA-947x-pv47-pp3q","PYSEC-2021-120"],"url":"https://o3.security/vulnerability/CVE-2021-39286","summary":"Cross-site scripting in pywb","details":"Webrecorder pywb before 2.6.0 allows XSS because it does not ensure that Jinja2 templates are autoescaped.","published":"2021-08-18T18:15:08.177Z","modified":"2026-07-08T23:59:01.569768Z","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":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pywb","fixedVersion":"2.6.0"}],"fix":{"url":"https://github.com/webrecorder/pywb/commit/f7bd84cdacdd665ff73ae8d09a202f60be2ebae9","label":"webrecorder/pywb@f7bd84c"},"references":[{"type":"ADVISORY","url":"https://github.com/webrecorder/pywb/compare/v-2.5.0...v-2.6.0"},{"type":"FIX","url":"https://github.com/webrecorder/pywb/commit/f7bd84cdacdd665ff73ae8d09a202f60be2ebae9"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T23:59:01.569768Z"}}