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4.3

Modular DS Plugin for WordPress: Attackers can hijack admin actions

CVE-2026-3903
Summary

If you use the Modular DS: Monitor, update, and backup multiple websites plugin on your WordPress site, an attacker can trick an administrator into performing certain actions, such as disconnecting the plugin's connection, by sending a fake request. This can happen if you click on a malicious link without realizing it. Update the plugin to the latest version to fix this issue.

Original title
The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing no...
Original description
The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.5.1. This is due to missing nonce validation on the postConfirmOauth() function. This makes it possible for unauthenticated attackers to disconnect the plugin's OAuth/SSO connection via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
nvd CVSS3.1 4.3
Vulnerability type
CWE-352 Cross-Site Request Forgery (CSRF)
Published: 11 Mar 2026 · Updated: 13 Mar 2026 · First seen: 11 Mar 2026