Critical Bug

Critical bugs are the most serious category of software defects. They include issues like checkout flows that fail silently, authentication systems that can be bypassed, data that gets corrupted on save, and crashes that occur during normal usage. A critical bug typically means the application should not be released or, if already live, needs an immediate fix.

Vibecoded applications are particularly prone to critical bugs in areas that involve complex logic or sensitive operations. AI-generated payment processing code might not properly validate amounts. Authentication code might have exploitable gaps. Data handling code might lose or corrupt information under specific conditions. These are exactly the kinds of issues that a vibecoder might not think to test because they did not write the code and may not understand the potential failure modes.

DidItWork classifies bugs by severity, ensuring that critical issues are flagged with the highest priority. When a tester finds a bug that prevents core functionality from working or puts user data at risk, it is reported as critical, giving the developer clear guidance on what to fix first.