crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the crun exec option -u (--user) is incorrectly parsed. The value 1 is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Exploitability
AV:LAC:LPR:NUI:NScope
S:UImpact
C:NI:NA:N0/CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:NConfiguration