{"id":"CVE-2021-33507","aliases":["GHSA-35rg-466w-77h3","PYSEC-2021-79","PYSEC-2026-2961","PYSEC-2026-2967"],"url":"https://o3.security/vulnerability/CVE-2021-33507","summary":"Cross-site scripting in Products.CMFCore, Products.PluggableAuthService, Plone","details":"Zope Products.CMFCore before 2.5.1 and Products.PluggableAuthService before 2.6.2, as used in Plone through 5.2.4 and other products, allow Reflected XSS.","published":"2021-05-21T22:15:08.470Z","modified":"2026-07-13T16:43:09.732565422Z","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":null,"affectedPackages":[{"ecosystem":"PyPI","name":"products-cmfcore","fixedVersion":"2.5.1"},{"ecosystem":"PyPI","name":"products-pluggableauthservice","fixedVersion":"2.6.2"},{"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/reflected-xss-in-various-spots"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-13T16:43:09.732565422Z"}}