How severe is CVE-2026-5582?

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

CSRF in Fusewp – Wordpress User Sync To Email List & Marketing Automation (Mailchimp, Constant Contact, Activecampaign Etc.)

CVE-2026-5582

The FuseWP plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.24.2. This is due to missing nonce verification on the toggle_sync_status() function. This makes it possible for unauthen…

Vulnerability class: CSRF (Cross-Site Request Forgery)

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

Fusewp – Wordpress User Sync To Email List & Marketing Automation (Mailchimp, Constant Contact, Activecampaign Etc.) — versions 0

Weakness classification (CWE)

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

References

Frequently asked questions

What is CVE-2026-5582?: CVE-2026-5582 is a medium-severity vulnerability in Fusewp – Wordpress User Sync To Email List & Marketing Automation (Mailchimp, Constant Contact, Activecampaign Etc.), classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2026-07-30.
How severe is CVE-2026-5582?: Medium severity. CVSS v3 base score is 4.3 out of 10.