The tourmaster WordPress plugin before 5.4.8 does not perform a nonce check when storing a custom-filter label taken from a request parameter, and does not escape that label when echoing it on the filter admin page, allowing an unauthenticated attacker to trick a logged-in administrator into storing JavaScript that then executes in the admin area (stored Cross-Site Scripting via CSRF).
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Tourmaster Plugin | — | Update tourmaster plugin to version 5.4.8, or a newer patched version | Aug 17, 2026 | Aug 13, 2026 |
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