CVE-2026-97337 Missing authorization in Simple Membership
Unauthenticated attackers can redirect activation emails to steal credentials and take over pending member accounts in the Simple Membership WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-97337?
CVE-2026-97337 is a high-severity missing authorization vulnerability in wpinsider-1 Simple Membership, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Simple Membership plugin for WordPress is vulnerable to unauthorized modification of data and sensitive information disclosure in versions up to, and including, 4.8.3 via the resend-activation and email-activation endpoints. The endpoints are dispatched from SwpmInitTimeTasks::check_and_do_email_activation() on frontend init with no authentication, nonce, capability, or ownership check, and the recipient address used by SwpmRegistration::send_reg_email() is taken from an attacker-controlled $_POST['email'] parameter (overriding the member's registered address). This makes it possible for unauthenticated attackers to redirect an arbitrary pending member's activation email — and the follow-up 'registration complete' email containing the member's username and plaintext password — to an attacker-chosen address, and to then activate that member's account without their consent.
Weakness: CWE-862
Which versions are affected by CVE-2026-97337?
How do I fix CVE-2026-97337?
No fix has been published for CVE-2026-97337 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-97337 being exploited?
There is no known exploitation of CVE-2026-97337 in the wild and no public exploit code.
Sources
Also known as GHSA-7wr9-4367-v9vm.