CVE-2026-8151 PUBLISHED

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

Assigner: WPScan
Reserved: 08.05.2026 Published: 02.09.2026 Updated: 02.09.2026

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.

Metrics

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

Product Status

Vendor Unknown
Product Simple Membership MailChimp Integration
Versions Default: unaffected
  • affected from 0 to 1.9.8 (excl.)

Credits

  • Mustafa Ahmed finder
  • WPScan coordinator

References

Problem Types

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