CVE-2026-9178 WP Forms Connector <= 1.8 - Missing Authorization to Unauthenticated Information Exposure via 'user/list' REST Endpoint
Unauthenticated attackers can retrieve sensitive user data, including password hashes, due to missing authorization checks in the WP Forms Connector plugin.
- 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-2026-9178?
CVE-2026-9178 is a high-severity missing authorization vulnerability in hancock11 WP Forms Connector, published on 24 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The WP Forms Connector plugin for WordPress is vulnerable to Information Exposure in all versions up to, and including, 1.8. The plugin registers the REST route wp/v3/user/list/<id> (callback userDetail()) with permission_callback set to '__return_true', and the function's home-grown authentication only verifies that the supplied 'Username' HTTP header maps to an administrator account and that a 'Password' HTTP header is non-empty. It never validates the password with wp_check_password() (unlike the sibling delete_wc_user() function which does). This makes it possible for unauthenticated attackers to retrieve sensitive information for any registered user ID — including the WordPress password hash (user_pass) and email address — by sending a request with a valid administrator login name (commonly the default 'admin') and any arbitrary password value.
Weakness: CWE-862
Which versions are affected by CVE-2026-9178?
How do I fix CVE-2026-9178?
No fix has been published for CVE-2026-9178 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-2026-9178 being exploited?
There is no known exploitation of CVE-2026-9178 in the wild and no public exploit code.
Sources
Also known as GHSA-q7pg-wxgw-7v4g.