CWE-1287—Improper Validation of Specified Type of Input

Weakness Name

Improper Validation of Specified Type of Input

Description

The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.

When input does not comply with the expected type, attackers could trigger unexpected errors, cause incorrect actions to take place, or exploit latent vulnerabilities that would not be possible if the input conformed with the expected type. This weakness can appear in type-unsafe programming languages, or in programming languages that support casting or conversion of an input to another type.

Common Consequences

Scope:

Other

Impact:

Varies by Context

Related Weaknesses

• CWE-20Improper Input ValidationHigh
• CWE-843Access of Resource Using Incompatible Type ('Type Confusion')