CWE Top 25 Most Dangerous Software Weaknesses

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

The product writes data past the end, or before the beginning, of the intended buffer.

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

The product reads data past the end, or before the beginning, of the intended buffer.

The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.

The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

The product dereferences a pointer that it expects to be valid but is NULL.

The product contains hard-coded credentials, such as a password or cryptographic key.

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

The product does not properly control the allocation and maintenance of a limited resource.

The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.