The Converter for Media – Optimize images | Convert WebP & AVIF plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `/webp-converter/v1/regenerate-attachment` REST endpoint in all versions up to, and including, 6.3.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete optimized WebP/AVIF variants for arbitrary attachments.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Webp Converter For Media Plugin | — | Update webp-converter-for-media plugin to version 6.4.0, or a newer patched version | Dec 17, 2025 | Dec 16, 2025 |
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