CVE-2021-33512

Plone through 5.2.4 allows stored XSS attacks (by a Contributor) by uploading an SVG or HTML document.

Date published : 2021-05-21

https://plone.org/security/hotfix/20210518/stored-xss-from-file-upload-svg-html

http://www.openwall.com/lists/oss-security/2021/05/22/1