In Emacs before 29.3, Gnus treats inline MIME contents as trusted.
https://lists.debian.org/debian-lts-announce/2024/04/msg00024.html
https://lists.debian.org/debian-lts-announce/2024/04/msg00023.html
https://git.savannah.gnu.org/cgit/emacs.git/tree/etc/NEWS?h=emacs-29
http://www.openwall.com/lists/oss-security/2024/04/11/6
http://www.openwall.com/lists/oss-security/2024/04/11/5
http://www.openwall.com/lists/oss-security/2024/04/11/4
http://www.openwall.com/lists/oss-security/2024/04/10/6
http://www.openwall.com/lists/oss-security/2024/04/10/5
http://www.openwall.com/lists/oss-security/2024/04/10/4
http://www.openwall.com/lists/oss-security/2024/04/10/3
http://www.openwall.com/lists/oss-security/2024/04/08/7
http://www.openwall.com/lists/oss-security/2024/04/08/6
http://www.openwall.com/lists/oss-security/2024/04/08/4