CVE-2026-8151

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

MEDIUM
5.4
CVSS Score
Published: September 2, 2026 at 02:16 PM UTC
Updated: September 3, 2026 at 06:04 PM UTC
1 product affected across 1 vendorSimple Membership MailChimp Integration

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Severity
MEDIUM5.4
Exploit prediction
EPSS 0.1%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.9.8
Affected range stops below 1.9.8, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.4MEDIUMWPScan
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-352

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