CVE-2026-8151 Simple Membership MailChimp Integration < 1.9.8 - API Key Update via CSRF
Attackers can trick admins into changing API keys via CSRF, redirecting member data to attacker accounts in Simple Membership MailChimp Integration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-8151?
CVE-2026-8151 is a medium-severity vulnerability in Unknown Simple Membership MailChimp Integration, published on 2 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-352
Which versions are affected by CVE-2026-8151?
How do I fix CVE-2026-8151?
No fix has been published for CVE-2026-8151 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-8151 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-8151 exists.
Sources
Also known as GHSA-jj57-hm9m-766c.