{"id":"CVE-2021-33512","aliases":["GHSA-hm2h-f456-6j88","PYSEC-2021-84"],"url":"https://o3.security/vulnerability/CVE-2021-33512","summary":"Cross-site scripting in Plone","details":"Plone through 5.2.4 allows stored XSS attacks (by a Contributor) by uploading an SVG or HTML document.","published":"2021-05-21T22:15:08.630Z","modified":"2026-07-08T21:27:06.385476Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"plone","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2021/05/22/1"},{"type":"ADVISORY","url":"https://plone.org/security/hotfix/20210518/stored-xss-from-file-upload-svg-html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:27:06.385476Z"}}