PT-2026-51677 · Newscred · Welcome Software Publishing
Nabil Irawan
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Published
2026-06-24
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Updated
2026-06-24
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CVE-2026-4297
CVSS v3.1
8.8
High
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
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.
Fix
Missing Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Welcome Software Publishing