VNX-348 – Use of Less Trusted Source

Overview

VNX-348 maps to CWE-348: Use of Less Trusted Source. Detects source patterns associated with CWE-348 (Use of Less Trusted Source). Each finding should be manually reviewed for exploitability in context.

Severity: Medium | CWE: CWE-348 | Languages: java, node, python

Why This Matters

This weakness class (Use of Less Trusted Source) creates a concrete exploit surface: the rule searches for the concrete source-level patterns most commonly associated with CWE-348 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 'X-Forwarded-For' pattern
X-Forwarded-For

Remediation

  1. Review each flagged line and determine whether the pattern represents a real instance of CWE-348 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-348 comment on the line.
  4. Ensure equivalent test coverage exists to prevent regression.

References