CVE intelligence and bounded remediation

CVE-2019-20801 — An issue was discovered in the Readdle Documents app before 6.9.7 for iOS

Medium CVSS 5.3

An issue was discovered in the Readdle Documents app before 6.9.7 for iOS. The application's file-transfer web server allows for cross-origin requests from any domain, and the WebSocket server lacks authorization control. Any web site can execute JavaScript code (that accesses a user's data) via cross-origin requests.

Severity
Medium
CVSS
5.3 (3.1)
Published
2020-05-18
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-862, CWE-863

Affected products

  • readdle / documents

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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