spip is vulnerable to authorization bypass. The vulnerability exists as authenticated visitors can modify any published content and execute other modifications in the database.
blog.spip.net/Mise-a-jour-CRITIQUE-de-securite-Sortie-de-SPIP-3-2-5-et-SPIP-3-1-11.html
blog.spip.net/Mise-a-jour-CRITIQUE-de-securite-Sortie-de-SPIP-3-2-5-et-SPIP-3-1-11.html?lang=fr
git.spip.net/SPIP/spip/commit/187952ce85e73b52c2753f2d54fc2c44807b8f79
git.spip.net/SPIP/spip/commit/3cbc758400323ab006c00ea78eacdb8f76aa5f66
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