Quick answers
- Is CVE-2026-97337 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-97337 being exploited in the wild.
- How severe is CVE-2026-97337?
- High severity, with a CVSS score of 7.5, published 3 October 2026.
- Which products and versions are affected?
- WordPress.org Simple Membership up to and including 4.8.3.
- Is there a fix for CVE-2026-97337?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-97337 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-97337?
- Check whether you run WordPress.org Simple Membership at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The plugin's resend-activation and email-activation endpoints lack authentication, nonce validation, and ownership checks, allowing unauthenticated access during frontend initialization. The vulnerability stems from use of an attacker-controlled $_POST['email'] parameter in SwpmRegistration::send_reg_email() to override the member's registered email address. An attacker can intercept activation and welcome emails containing usernames and plaintext passwords, then activate accounts without consent.
Affected products
- WordPress.org Simple Membership up to and including 4.8.3
Timeline
- 2026-10-03: disclosed