PT-2026-51677 · WordPress · Welcome Software Publishing
CVSS v3.1
8.8
High
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
Welcome Software Publishing versions prior to 0.0.32
Description
The plugin is subject to an Arbitrary Options Update issue caused by a missing capability check in the
nc setOption() function, which is exposed through the 'nc.setOption' XML-RPC method. While the function verifies credentials via $wp xmlrpc server->login(), it fails to perform authorization checks, such as current user can('manage options'). This allows authenticated attackers with Subscriber-level access or higher to update arbitrary WordPress options via XML-RPC requests. An attacker can exploit this to change the default role option to 'administrator' and register a new administrator account, leading to full privilege escalation and site takeover.Recommendations
Update to a version later than 0.0.31.
As a temporary workaround, restrict access to the 'nc.setOption' XML-RPC method or disable XML-RPC functionality to minimize the risk of exploitation.
Fix
LPE
Missing Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Welcome Software Publishing