CVE intelligence and bounded remediation

CVE-2018-16086 — Google Chrome security vulnerability

Medium CVSS 5.8

Insufficient policy enforcement in extensions API in Google Chrome prior to 69.0.3497.81 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

Severity
Medium
CVSS
5.8 (2.0)
Published
2019-06-27
CISA KEV
Not currently listed
Ecosystem
browser
Weaknesses
CWE-285

Affected products

  • google / chrome

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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