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The EWWW Image Optimizer WordPress plugin before 8.8.0 does not confine a WebP-derivative file migration routine to the current site's own uploads directory, letting an attacker with Administrator-level access rename or delete existing WebP-derivative image files outside that scope, including, on a multisite network, files belonging to a different site they have no access to.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Ewww Image Optimizer Plugin | — | Update ewww-image-optimizer plugin to version 8.8.0, or a newer patched version | Oct 30, 2026 | Sep 28, 2026 |
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