CVE-2026-97337Simple Membership <= 4.8.3 - Missing Authorization to Unauthenticated Account Takeover and Sensitive Information Disclosure via 'email' Parameter on Activation Endpoints
Updated under an hour ago ()
Does this affect you?
It affects wpinsider-1 Simple Membership. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.37%, higher than 30% of scored CVEs.
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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.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.37% (percentile 30)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpinsider-1 Simple Membership wpinsider_1:simple_membership (from the name) | through 4.8.3 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ae2b6c4c-7dd6-41e7-8b8d-c09aa7fa660b?source=cve
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.3/classes/class.swpm-registration.php#L75
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.3/classes/class.swpm-front-registration.php#L850
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.3/classes/class.swpm-front-registration.php#L774
- https://plugins.trac.wordpress.org/browser/simple-membership/tags/4.8.3/classes/class.swpm-init-time-tasks.php#L167
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3716437%40simple-membership&new=3716437%40simple-membership
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.