phpList before 3.5.3 allows XSS, with resultant privilege elevation, via lists/admin/template.php.
https://www.phplist.org/newslist/phplist-3-5-3-release-notes/
https://github.com/phpList/phplist3/compare/3.5.2...3.5.3
Source: Mitre, NVD
Published: 2020-05-04
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00359