CWE-1024
Comparison of Incompatible Types
AI Translation Available
The product performs a comparison between two entities, but the entities are of different, incompatible types that cannot be guaranteed to provide correct results when they are directly compared.
Status
incomplete
Abstraction
base
Affected Platforms
JavaScript
PHP
Not Language-Specific
Extended Description
AI Translation
In languages that are strictly typed but support casting/conversion, such as C or C++, the programmer might assume that casting one entity to the same type as another entity will ensure that the comparison will be performed correctly, but this cannot be guaranteed. In languages that are not strictly typed, such as PHP or JavaScript, there may be implicit casting/conversion to a type that the programmer is unaware of, causing unexpected results; for example, the string '123' might be converted to a number type. See examples.
Technical Details
AI Translation
Common Consequences
other
Impacts
varies by context
Potential Mitigations
Phases:
testing
Descriptions:
•
Thoroughly test the comparison scheme before deploying code into production. Perform positive testing as well as negative testing.