A cross-site scripting (XSS) vulnerability in LemonLDAP::NG before 2.20.1 allows remote attackers to inject arbitrary web script or HTML via the url parameter of the upgrade session confirmation page (upgradeSession / forceUpgrade) if the "Upgrade session" plugin has been enabled by an admin
https://lists.debian.org/debian-lts-announce/2024/11/msg00037.html
https://gitlab.ow2.org/lemonldap-ng/lemonldap-ng/-/issues/3257