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The Categories Images plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 3.3.1, via the 'z_taxonomy_image' shortcode. This is due to the shortcode rendering path passing attacker-controlled class input into a fallback image builder that concatenates HTML attributes without proper escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts that execute when users interact with the injected frontend page via the 'class' shortcode attribute.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Categories Images Plugin | — | Update categories-images plugin to version 3.3.2, or a newer patched version | Apr 29, 2026 | Apr 17, 2026 |
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