CVE intelligence and bounded remediation

CVE-2023-3219 — Myeventon Eventon security vulnerability

Medium CVSS 5.3

The EventON WordPress plugin before 2.1.2 does not validate that the event_id parameter in its eventon_ics_download ajax action is a valid Event, allowing unauthenticated visitors to access any Post (including unpublished or protected posts) content via the ics export functionality by providing the numeric id of the post.

Severity
Medium
CVSS
5.3 (3.1)
Published
2023-07-10
CISA KEV
Not currently listed
Ecosystem
php/wordpress
Weaknesses
CWE-639

Affected products

  • myeventon / eventon

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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