CSRF in Simple Membership Mailchimp Integration
CVE-2026-8151
The Simple Membership MailChimp Integration WordPress plugin before 1.9.8 does not have CSRF checks in its settings page, allowing attackers to trick a logged-in administrator into changing the configured third-party API key. Once replaced, all subsequent member registration data (name, email, membership level) is sent to the attacker-controlled account.
Vulnerability class: CSRF (Cross-Site Request Forgery)
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
Affected products
- Unknown Simple Membership Mailchimp Integration
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
- contact@wpscan.com (patch)
Frequently asked questions
- What is CVE-2026-8151?
- CVE-2026-8151 is a medium-severity vulnerability in Simple Membership Mailchimp Integration, classified under Cross-Site Request Forgery (CSRF). CVSS score: 5.4/10. Published 2026-09-02.
- How severe is CVE-2026-8151?
- Medium severity. CVSS v3 base score is 5.4 out of 10.