CVE-2019-25738 WordPress Hybrid Composer 1.4.6 Unauthenticated Settings Change

Critical 9.3 Published Updated

Unauthenticated attackers can modify WordPress settings to enable registration and set default roles to administrator, leading to account takeover.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-25738?

CVE-2019-25738 is a critical missing authorization vulnerability in framework-y Hybrid Composer, published on 4 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

WordPress Hybrid Composer 1.4.6 contains an unauthenticated settings change vulnerability that allows unauthenticated attackers to modify WordPress options by exploiting the hc_ajax_save_option action. Attackers can send POST requests to the admin-ajax.php endpoint with the action parameter set to hc_ajax_save_option to enable user registration and set the default role to administrator, enabling account takeover.

Weakness: CWE-306

Which versions are affected by CVE-2019-25738?

How do I fix CVE-2019-25738?

No fix has been published for CVE-2019-25738 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2019-25738 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25738 exists.

Sources

Also known as GHSA-p9g9-jpx8-w224.

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