05 / Diagnostic Suite / Vulnerability

Open Redirect Scanner

Tests redirect and return parameters against protocol-relative and untrusted destination vectors.

PROPRIETARY DIAGNOSTIC ENGINE
Bear Sentinel™ URI Boundary Verifier
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Theoretical Threat Model & Compliance Bounds
Authoritative Standards & Citations
Regulatory & Compliance Liability Impact
Anti-Phishing Working Group (APWG) Standard
Attack Vector & Structural Vulnerability Analysis

Attackers construct deceptive URLs using your trusted apex domain that redirect victims to credential-harvesting phishing replicas.

Non-Intrusive Diagnostic Verification Protocol

Fuzzes redirect parameters (?redirect=, ?next=, ?return_to=) with external URIs and protocol-relative prefixes (//evil.com).

Taxonomy Classification
Vulnerability · Enterprise Diagnostic Module
Enterprise Remediation Directive

Enforce strict relative URL validation, rejecting any redirect target that does not begin with a single slash or matches an internal allowlist.

Standard Best-Practice Reference Blueprint
function sanitizeRedirect(url: string): string {
  if (!url || !url.startsWith('/') || url.startsWith('//')) return '/'
  return url
}
48-HOUR PRODUCTION HARDENING SPRINT
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