CVE-2026-4297
Welcome Software Publishing <= 0.0.31 - Authenticated (Subscriber+) Arbitrary Options Update to Privilege Escalation via 'nc.setOption' XML-RPC Method
Description
The Welcome Software Publishing plugin for WordPress is vulnerable to Arbitrary Options Update in all versions up to and including 0.0.31. This is due to a missing capability check in the nc_setOption() function, which is exposed via the nc.setOption XML-RPC method. The function authenticates the user via $wp_xmlrpc_server->login() (verifying credentials are valid) but does not perform any authorization check such as current_user_can('manage_options'). This makes it possible for authenticated attackers, with Subscriber-level access and above, to update arbitrary WordPress options via XML-RPC requests. This can be leveraged to change the default_role option to 'administrator' and then register a new administrator account, achieving full privilege escalation and site takeover.
INFO
Published Date :
June 24, 2026, 5:33 a.m.
Last Modified :
June 24, 2026, 5:33 a.m.
Remotely Exploit :
No
Source :
Wordfence
Affected Products
The following products are affected by CVE-2026-4297
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update the Welcome Software Publishing plugin to a patched version.
- Remove the nc.setOption XML-RPC method if possible.
- Disable XML-RPC if not strictly needed.
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CVE-2026-4297 vulnerability anywhere in the article.