Weblate is a web based localization tool. Prior to 5.16.0, the SSH management console did not validate the passed input while adding the SSH host key, which could lead to an argument injection to ssh-add. Version 5.16.0 fixes the issue. As a workaround, properly limit access to the management console.
Exploitability
AV:NAC:LPR:HUI:NScope
S:CImpact
C:LI:LA:L6.6/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:LOther