The bug was due to missing a max length check. Maybe the developer and code reviewer(s) were unaware that there was a max length? No amount of coding diligence

The bug was due to missing a max length check. Maybe the developer and code reviewer(s) were unaware that there was a max length? No amount of coding diligence could save you if there are requirements you don't know. Granted, length limits are a common requirement and maybe they should have known.