VNX-838 – Inappropriate Encoding for Output Context

Overview

VNX-838 maps to CWE-838: Inappropriate Encoding for Output Context. Detects source patterns associated with CWE-838 (Inappropriate Encoding for Output Context). Each finding should be manually reviewed for exploitability in context.

Severity: Low | CWE: CWE-838 | Languages: node, python

Why This Matters

This weakness class (Inappropriate Encoding for Output Context) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-838 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 'encodeURIComponent' pattern
encodeURIComponent

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-838 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-838 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References