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The AffiliateX – Amazon Affiliate Plugin plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_customization_settings AJAX action in versions 1.0.0 to 1.3.9.3. This makes it possible for authenticated attackers, with Subscriber-level access and above, to store arbitrary JavaScript that executes whenever an AffiliateX block renders on the site.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Affiliatex Plugin | — | Update affiliatex plugin to version 1.4.0, or a newer patched version | Jan 15, 2026 | Jan 15, 2026 |
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