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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-8151
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-02 15:17:46 UTC
Updated2026-09-03 17:50:37 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 5.4 MEDIUM from [email protected]

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

EPSS: 0.000950000 probability, percentile 0.007190000 (date 2026-09-07)

Problem Types: CWE-352 | CWE-352 Cross-Site Request Forgery (CSRF) | CWE-352 CWE-352 Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
3.1CNADECLARED5.4MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown Simple Membership MailChimp Integration affected 1.9.8 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/c7002cf8-83db-4e1f-a6e9-230293290635 [email protected] wpscan.com
plugins.trac.wordpress.org/browser/simple-membership-mailchimp-integration/trunk/swpm-ma... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Mustafa Ahmed (en)

CNA: WPScan (en)

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