CVE-2026-8151

Simple Membership MailChimp Integration < 1.9.8 - API Key Update via CSRF

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.

Affected

Simple Membership MailChimp Integration

CVSS v3.1 WPSCAN

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

EPSS

0.10% chance of exploitation in the next 30 days, 1st percentile

Published

2026-09-02

Proof-of-concept exploits (1)

• https://wpscan.com/vulnerability/c7002cf8-83db-4e1f-a6e9-230293290635/

References

• CVE Record
• NVD entry