Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.
listes.entrouvert.com/arc/lasso/
git.entrouvert.org/lasso.git/commit/?id=076a37d7f0eb74001127481da2d355683693cde9
git.entrouvert.org/lasso.git/tree/NEWS?id=v2.7.0
lists.debian.org/debian-lts-announce/2021/06/msg00013.html
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SI4YAQF4VEV2KHQ6OXXZL7CJK7IZQ3EG/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YSVWOHBBWLI2RB5C6TXINFEJRT4YSD3D/
www.debian.org/security/2021/dsa-4926