CWE-431: Missing Handler
A handler is not available or implemented.
How it's found
Missing Handler is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
When an exception is thrown and not caught, the process has given up an opportunity to decide if a given failure or event is worth a change in execution.
Consequences
- Varies by Context
Mitigations
- Implementation: Handle all possible situations (e.g. error condition).
- Implementation: If an operation can throw an Exception, implement a handler for that specific exception.
Where this fits in a TurboPentest engagement
TurboPentest's agentic pentest is powerful and covers a broad range of issues automatically. This particular class is best confirmed in a manual IntegSec engagement, where human pentesters apply deeper methodology and a larger context window than any automated pass.
Frequently asked questions
What is CWE-431?
A handler is not available or implemented.
How do you find Missing Handler?
Missing Handler is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
What is the impact of CWE-431?
Varies by Context
Does TurboPentest test for Missing Handler?
TurboPentest's agentic pentest is powerful and covers a broad range of issues automatically. This particular class is best confirmed in a manual IntegSec engagement, where human pentesters apply deeper methodology and a larger context window than any automated pass.
Related CWEs
About this reference
These security references are maintained by IntegSec, an offensive-security firm whose team holds CISSP, OSCP, and OSCE certifications and has run thousands of penetration tests. Content is kept current as tools, standards, and attack techniques evolve.
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