Is CVE-2026-90976 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-90976 being exploited in the wild.

How severe is CVE-2026-90976?

Medium severity, with a CVSS score of 5.3, published 18 September 2026.

Which products and versions are affected?

Clean Login Clean Login before 1.19.

Is there a fix for CVE-2026-90976?

A patch was published on 2026-09-19: Fixed in version 1.19 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-90976 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-90976?

Check whether anything you run is named in the advisory. 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.

CVE-2026-90976: Clean Login WordPress plugin account creation bypass

CVE-2026-90976 · Severity: medium · CVSS 5.3 · Published 2026-09-18

Clean Login is a WordPress plugin that manages user registration and authentication. The plugin fails to enforce the site administrator's setting to disable user registration, allowing attackers to bypass this control and create new user accounts even when registration is explicitly disabled. This could lead to unauthorized account creation and potential account takeover if weak credentials are used.

Quick answers

Is CVE-2026-90976 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-90976 being exploited in the wild.
How severe is CVE-2026-90976?: Medium severity, with a CVSS score of 5.3, published 18 September 2026.
Which products and versions are affected?: Clean Login Clean Login before 1.19.
Is there a fix for CVE-2026-90976?: A patch was published on 2026-09-19: Fixed in version 1.19 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-90976 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-90976?: Check whether anything you run is named in the advisory. 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 vulnerability is an access control bypass in the plugin's registration handler. The vulnerable component fails to check the WordPress site setting that controls whether user registration is enabled (wp_site_allows_registration check) before processing account creation requests. An unauthenticated attacker can send a direct registration request to bypass this check and create a new account on the target site. No authentication or special privileges are required; the attack is performed entirely over the network via HTTP POST to the registration endpoint. The vulnerability has been patched in version 1.19.

Affected products

Clean Login Clean Login before 1.19

Timeline

2026-09-16: disclosed
2026-09-18: advisory: Published to NVD
2026-09-19: patched: Fixed in version 1.19

References

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