VNX-394 – Unexpected Status Code or Return Value

Overview

VNX-394 maps to CWE-394: Unexpected Status Code or Return Value. Detects source patterns associated with CWE-394 (Unexpected Status Code or Return Value). Each finding should be manually reviewed for exploitability in context.

Severity: Low | CWE: CWE-394 | Languages: python

Why This Matters

This weakness class (Unexpected Status Code or Return Value) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-394 and surfaces them for review. Each finding should be evaluated in context — the rule catches the pattern, not the context.

What Gets Flagged

// FLAGGED: contains 'status_code = ' pattern
status_code =

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-394 or a false positive.
  2. Replace the flagged construct with a documented safe alternative appropriate to your language and framework.
  3. For confirmed false positives, add a # vulnetix-ignore: VNX-394 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References