Attack Vectors

ValidateCertify Free (slug: validar-certificados-de-cursos) versions up to and including 1.6.4 are affected by a Cross-Site Request Forgery (CSRF) vulnerability (Medium severity; CVSS 4.3, vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N; CVE-2025-48115).

CSRF attacks typically rely on social engineering: an attacker lures a logged-in WordPress administrator (or other privileged user) into clicking a link, opening a crafted page, or interacting with an email or message while still authenticated to the WordPress dashboard.

Because this issue is described as stemming from missing or incorrect nonce validation on a function, a successful attack can cause the administrator’s browser to submit an unintended request to the site—effectively performing an action “as the admin” without the admin realizing it.

Security Weakness

The reported weakness is insufficient request validation (missing/incorrect WordPress nonce checks). Nonces are a common WordPress control designed to ensure that sensitive actions in the admin area originate from intentional, legitimate user interactions.

When nonce validation is missing or implemented incorrectly, WordPress can accept state-changing requests that appear to come from an authenticated administrator—even if they were triggered by a third-party site or link. This undermines administrative safeguards and increases the likelihood of “one-click” administrative changes.

Technical or Business Impacts

With this vulnerability, an unauthenticated attacker may be able to trigger unauthorized actions by tricking an administrator into clicking or visiting something while logged in. The CVSS rating indicates low integrity impact (I:L) and no direct confidentiality or availability impact in the published score, but the business risk can still be meaningful depending on what administrative action is exposed.

From a business perspective, even low-to-medium impact admin actions can create operational disruption: unexpected configuration changes, altered plugin settings, and the resulting time spent on incident response, internal troubleshooting, and stakeholder reporting. For organizations with compliance requirements, unintended admin actions may also raise audit and change-management concerns.

Recommended remediation: Update ValidateCertify Free to version 1.6.5 or newer (patched). Source: Wordfence Vulnerability Database.

Similar Attacks

CSRF is a well-known web attack pattern and has been repeatedly observed across many platforms and plugins. For additional context, here are a few real-world examples and references:

OWASP: Cross-Site Request Forgery (CSRF)
CVE-2024-27956
CVE-2023-22518