Weakness (CWE)

CWE-627: Dynamic Variable Evaluation

Variant Incomplete

In a language where the user can influence the name of a variable at runtime, if the variable names are not controlled, an attacker can read or write to arbitrary variables, or access arbitrary functions.

How to prevent it (3 mitigations)

Implementation

Refactor the code to avoid dynamic variable evaluation whenever possible.
Implementation

Use only allowlists of acceptable variable or function names.
Implementation

For function names, ensure that you are only calling functions that accept the proper number of arguments, to avoid unexpected null arguments.

Source: MITRE CWE-627

All Critical High Medium Low Exploited only Public exploit

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