CVE intelligence and bounded remediation

CVE-2016-5173 — Google Chrome security vulnerability

High CVSS 7.1

The extensions subsystem in Google Chrome before 53.0.2785.113 does not properly restrict access to Object.prototype, which allows remote attackers to load unintended resources, and consequently trigger unintended JavaScript function calls and bypass the Same Origin Policy via an indirect interception attack.

Severity
High
CVSS
7.1 (3.0)
Published
2016-09-25
CISA KEV
Not currently listed
Ecosystem
browser
Weaknesses
CWE-284

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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