In GNOME grilo though 0.3.13, grl-net-wc.c does not enable TLS certificate verification on the SoupSessionAsync objects it creates, leaving users vulnerable to network MITM attacks. NOTE: this is similar to CVE-2016-20011.
https://www.debian.org/security/2021/dsa-4964
https://lists.debian.org/debian-lts-announce/2021/09/msg00010.html