CVE intelligence and bounded remediation

CVE-2026-3110 — Insecure Direct Object Reference (IDOR) vulnerability in Campus Educativa specifically at the endpoint...

High CVSS 8.7

Insecure Direct Object Reference (IDOR) vulnerability in Campus Educativa specifically at the endpoint '/administracion/admin_usuarios.cgi?filtro_estado=T&wAccion=listado_xlsx&wBuscar=&wFiltrar=&wOrden=alta_usuario&wid_cursoActual=[ID]' where the data of users enrolled in the course is exported. Successful exploitation of this vulnerability could allow an unauthenticated attacker to access user data (e.g., usernames, first and last names, email addresses, and phone numbers) and retrieve the data of all users enrolled in courses by performing a brute-force attack on the course ID via a manipulated URL.

Severity
High
CVSS
8.7 (4.0)
Published
2026-03-16
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-284

Affected products

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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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