Is CVE-2026-3903 actively exploited?

No active exploitation of CVE-2026-3903 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-3903 be exploited remotely?

Yes. CVE-2026-3903 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-3903?

CVE-2026-3903 has a CVSS score of 4.3 (MEDIUM).

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MEDIUM

CVE-2026-3903

CWE-352Published: March 11, 2026· Updated: Mar 11, 2026

4.3

CVSS v3.1

EPSS:0.01%probability of exploitation in 30 daysPercentile:2.0th

Official 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 Source

Technical Analysis

CVE-2026-3903 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.