SPIP before 3.1.11 and 3.2 before 3.2.5 provides different error messages from the password-reminder page depending on whether an e-mail address exists, which might help attackers to enumerate subscribers.
blog.spip.net/Mise-a-jour-CRITIQUE-de-securite-Sortie-de-SPIP-3-2-5-et-SPIP-3-1-11.html
core.spip.net/issues/4171
lists.debian.org/debian-lts-announce/2019/10/msg00038.html
seclists.org/bugtraq/2019/Sep/40
usn.ubuntu.com/4536-1/
www.debian.org/security/2019/dsa-4532
zone.spip.net/trac/spip-zone/changeset/117577/spip-zone
zone.spip.net/trac/spip-zone/changeset/117578/spip-zone