{"id":"CVE-2020-18702","aliases":["GHSA-5m69-3chg-6f8m","PYSEC-2021-143"],"url":"https://o3.security/vulnerability/CVE-2020-18702","summary":"Cross Site Scripting (XSS) in Quokka","details":"Cross Site Scripting (XSS) in Quokka v0.4.0 allows remote attackers to execute arbitrary code via the 'Username' parameter in the component 'quokka/admin/actions.py'.","published":"2021-08-16T18:15:07.137Z","modified":"2026-07-08T20:28:53.270462Z","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":0.01312,"percentile":0.68504,"asOf":"2026-08-25"},"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"PyPI","name":"quokka","fixedVersion":null}],"fix":null,"references":[{"type":"FIX","url":"https://github.com/rochacbruno/quokka/issues/675"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-18702"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-5m69-3chg-6f8m"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/quokka/PYSEC-2021-143.yaml"},{"type":"PACKAGE","url":"https://github.com/rochacbruno/quokka"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:28:53.270462Z"}}