---
title: "CVE-2026-97337: Simple Membership WordPress Plugin - Broken Access Control"
description: "Simple Membership WordPress plugin <= 4.8.3 contains an unauthorized data modification and information disclosure vulnerability caused by lack of authentication and validation in resend-activation and email-activation endpoints, letting unauthenticated attackers redirect activation emails and activate accounts without consent."
url: https://panop.io/threat-heartbeat/CVE-2026-97337/
---

# CVE-2026-97337 Simple Membership WordPress Plugin - Broken Access Control

Simple Membership WordPress plugin <= 4.8.3 contains an unauthorized data modification and information disclosure vulnerability caused by lack of authentication and validation in resend-activation and email-activation endpoints, letting unauthenticated attackers redirect activation emails and activate accounts without consent.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.37% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-97337)

## Details

Type

Broken Access Control

Impact

Information Disclosure, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Published

3 October 2026

Updated

15 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Update to the latest version of Simple Membership plugin.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-97337](https://nvd.nist.gov/vuln/detail/CVE-2026-97337)
- [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-front-registration.php#L774)
- [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#L850)
- [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/browser/simple-membership/tags/4.8.3/classes/class.swpm-init-time-tasks.php#L167)
- [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-registration.php#L75)
- [https://plugins.trac.wordpress.org/changeset?reponame=&old=3716437%40simple-membership&new=3716437%40simple-membership](https://plugins.trac.wordpress.org/changeset?reponame=&old=3716437%40simple-membership&new=3716437%40simple-membership)
- [https://www.wordfence.com/threat-intel/vulnerabilities/id/ae2b6c4c-7dd6-41e7-8b8d-c09aa7fa660b?source=cve](https://www.wordfence.com/threat-intel/vulnerabilities/id/ae2b6c4c-7dd6-41e7-8b8d-c09aa7fa660b?source=cve)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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