CVE-2026-8151: CWE-352 Cross-Site Request Forgery (CSRF) in Simple Membership MailChimp Integration
Description
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.
CVSS v3.1
Score 5.4medium
Affected software
Simple Membership MailChimp Integration
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8151 is a CSRF vulnerability in the Simple Membership MailChimp Integration WordPress plugin prior to version 1.9.8. The plugin's settings page does not implement CSRF checks, enabling an attacker to coerce an authenticated administrator into modifying the MailChimp API key configuration. This manipulation causes subsequent member registration data—including names, emails, and membership levels—to be sent to an attacker-controlled MailChimp account.
Potential Impact
An attacker who successfully exploits this vulnerability can cause sensitive member registration data to be exfiltrated to an attacker-controlled MailChimp account. This compromises the confidentiality of user information such as names, email addresses, and membership levels. There is no indication of impact on system availability or integrity beyond the data exposure.
Mitigation Recommendations
No official patch or remediation guidance is currently available. Users should monitor the vendor's advisory for updates and apply any future patches promptly. Until a fix is released, administrators should be cautious about visiting untrusted sites while logged into the WordPress admin panel to reduce the risk of CSRF attacks.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- WPScan
- Date Reserved
- 2026-05-08T08:09:49.723Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a98313aacd9273b49556b1d
Added to database: 09/02/2026, 14:22:50 UTC
Last enriched: 09/07/2026, 13:53:31 UTC
Last updated: 10/17/2026, 18:48:23 UTC
Views: 69
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