CVE-2026-55500

9routers has Exposure of Sensitive Information and Unprotected Database Import/Export, Allowing Complete Credential Theft and Database Takeover

export async function GET() {
  const payload = await exportDb();
  return NextResponse.json(payload);
}

export async function POST(request) {
  const payload = await request.json();
  await importDb(payload);
  // ...
}

export async function importDb(payload) {
  db.transaction(() => {
    // Wipe all tables
    db.run(`DELETE FROM settings`);
    db.run(`DELETE FROM providerConnections`);
    db.run(`DELETE FROM providerNodes`);
    db.run(`DELETE FROM proxyPools`);
    db.run(`DELETE FROM apiKeys`);
    db.run(`DELETE FROM combos`);
    db.run(`DELETE FROM kv WHERE scope IN (...)`);
    // Then insert attacker-controlled data
    // ...
  });
}

apiKeys: db.all(`SELECT * FROM apiKeys`).map((r) => ({ 
  id: r.id, key: r.key, name: r.name, ...
})),

• Confidentiality: Complete exposure of all stored secrets (API keys, OAuth tokens, OIDC client secrets)
• Integrity: Complete database replacement with attacker-controlled data
• Availability: Database wipe is possible by importing an empty database
• Scope Changed: Importing new settings affects all users and downstream services

CVE-2026-55500 has a CVSS score of 9.9 (Critical). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. No fixed version is listed yet, so configuration controls and monitoring matter more in the interim.

Kodem intelligence

Already deployed Kodem?

1. Require re-authentication for database export/import (not just an existing session)
2. Mask/redact API keys in export (or require explicit opt-in for key export)
3. Add confirmation step for import (require current password verification)
4. Implement database backup before import
5. Log all export/import operations with audit trail

1. What is CVE-2026-55500? CVE-2026-55500 is a critical-severity security vulnerability in 9router (npm), affecting versions <= 0.4.71. No fixed version is listed yet.
2. How severe is CVE-2026-55500? CVE-2026-55500 has a CVSS score of 9.9 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of 9router are affected by CVE-2026-55500? 9router (npm) versions <= 0.4.71 is affected.
4. Is there a fix for CVE-2026-55500? No fixed version is listed for CVE-2026-55500 yet. Monitor the advisory for updates and apply mitigations in the interim.
5. Is CVE-2026-55500 exploitable, and should I be worried? Whether CVE-2026-55500 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2026-55500 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

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