A stored cross site scripting (XSS) vulnerability in phplist 3.5.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload entered into the “Add a list” field under the “Import Emails” module.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-23217
Reference (s):
- https://github.com/phpList/phplist3/issues/672
- https://www.phplist.org/newslist/phplist-3-5-4-release-notes/