Simple Membership MailChimp Integration < 1.9.8 - API Key Update via CSRF
Priority MEDIUM 58CWE-352Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Tampering
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-352.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00138 3rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simple Membership MailChimp Integration (Unknown): 1.9.8
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Simple Membership MailChimp Integration | before 1.9.8 | 1.9.8 | Patch available | CNA |
- Simple Membership MailChimp Integration VendorUnknown Affected before 1.9.8 Fixed in 1.9.8 Patch available CNA
Remediation
- Fix · CNA Simple Membership MailChimp Integration (Unknown) Fixed in 1.9.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-8151
- 2026-10-03 Alias added: GHSA-jj57-hm9m-766c
References
Sources
- CVE-2026-8151 · CVE Program
- CVE-2026-8151 · NVD
- FIRST EPSS
- GHSA-jj57-hm9m-766c · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences