Weblate is a web based localization tool. Versions lower than 5.13.1 contain a vulnerability that causes long session expiry during the second factor verification. The long session expiry could be used to circumvent rate limiting of the second factor. This issue is fixed in version 5.13.1.
Exploitability
AV:NAC:HAT:PPR:LUI:PVulnerable System
VC:LVI:LVA:NSubsequent System
SC:NSI:NSA:N2.1/CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:NOther