CVE-2026-8151 json
Simple Membership MailChimp Integration < 1.9.8 - API Key Update via CSRF
published 2026-09-02 2 mo ago modified 2026-09-03 2 mo ago also EUVD-2026-70043
- cvss
- 5.4
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 3%
- public exploits
- 0
- none known
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.
Patch / fix
- Unknown Simple Membership MailChimp Integration 1.9.8
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.14% chance of exploitation in the next 30 days, higher than 3% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/c7002cf8-83db-4e1f-a6e9-230293290635/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |
Affected products
- Unknown Simple Membership MailChimp Integration
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
- Technology feeds
References
-
plugins.trac.wordpress.org
/browser/simple-membership-mailchimp-integration/trunk/swpm-mailchimp-admin-menu.php#L12
patch
-
wpscan.com
/vulnerability/c7002cf8-83db-4e1f-a6e9-230293290635/
exploit, vdb-entry, technical-description
Sources
- CVE List CVE-2026-8151
- NVD CVE-2026-8151
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.