Facturación Electrónica Costa Rica <= 2.0.4 - Cross-Site Request Forgery to Plugin Settings Update
Strategic Overview
- Status
- Patched in 2.0.5
- Affected Plugin
- Facturación Electrónica Costa Rica
- Affected Version
<= 2.0.4- CVSS
- 4.3Medium
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2026-9720
At a glance
CVE-2026-9720 is a medium-severity Cross-Site Request Forgery (CSRF) vulnerability in the Facturación Electrónica Costa Rica WordPress plugin, affecting versions <= 2.0.4. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.0.5; sites on affected versions should update now. Disclosed July 2026, reported by swat.
Vulnerability Overview
The Facturación Electrónica Costa Rica plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.0.4. This is due to missing or incorrect nonce validation on the (global scope, included by fvcr_admin_page_html) function. This makes it possible for unauthenticated attackers to modify the plugin's configuration, including API tokens, access tokens, economic activity, Hacienda environment mode, invoice and ticket emission flags, exchange rate, and branch settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site.
CWE-352: Cross-Site Request Forgery (CSRF)
Reaching this weakness in Facturación Electrónica Costa Rica <= 2.0.4 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For Facturación Electrónica Costa Rica the fix is 2.0.5: builds <= 2.0.4 are affected, anything from 2.0.5 onward is not.
Remediation
Update to version 2.0.5, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Facturación Electrónica Costa Rica: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Facturación Electrónica Costa Rica 2.0.5 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C