What is CVE-2026-3903?

CVE-2026-3903 is a medium-severity vulnerability in Modulards Modular Ds: Monitor, Update, And Backup Multiple Websites, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-03-11.

How severe is CVE-2026-3903?

Medium severity. CVSS v3 base score is 4.3 out of 10.

CSRF in Modulards Modular Ds: Monitor, Update, And Backup Multiple Websites

CVE-2026-3903

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() f…

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.000 (4.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Modulards Modular Ds: Monitor, Update, And Backup Multiple Websites — versions 0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

Frequently asked questions

What is CVE-2026-3903?: CVE-2026-3903 is a medium-severity vulnerability in Modulards Modular Ds: Monitor, Update, And Backup Multiple Websites, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-03-11.
How severe is CVE-2026-3903?: Medium severity. CVSS v3 base score is 4.3 out of 10.