# Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction <= 3.1.3 - Unauthenticated reCAPTCHA Bypass

- **ID:** WPSEC-2026-2334
- **Plugin:** Paid Membership Subscriptions – Effortless Memberships, Recurring Payments & Content Restriction (`paid-member-subscriptions`), https://wordpress.org/plugins/paid-member-subscriptions/
- **Affected versions:** all versions before 3.1.4
- **Fixed in:** 3.1.4 (Update to 3.1.4 or later.)
- **Severity:** Medium 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-804
- **Usage among sites WPSec scans:** plugin Medium, affected versions Medium (as of 2026-11-03)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/paid-member-subscriptions
- **Fix released:** 2026-11-02
- **Published:** 2026-11-03
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2334/

## Description

The Paid Membership Subscriptions plugin for WordPress is vulnerable to a reCAPTCHA bypass in all versions up to, and including, 3.1.3. The reCAPTCHA v3 validation accepted an empty token when the request included a 'pms_recaptcha_init_error' nonce that is printed on the public form, and the login form check could be altered or skipped by posting the bare 'pms_login' or 'wppb_login' flags to wp-login.php. This makes it possible for unauthenticated attackers to bypass the reCAPTCHA protection enabled by the site owner on registration and login forms, for example to perform automated sign-ups or brute-force login attempts.

## References

- https://wpsec.com/vuln/WPSEC-2026-2334/
- https://plugins.svn.wordpress.org/paid-member-subscriptions/tags/3.1.4/
- https://wordpress.org/plugins/paid-member-subscriptions/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2334/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.