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The Gutenberg Template Library & Redux Framework plugin <= 4.2.11 for WordPress registered several AJAX actions available to unauthenticated users in the `includes` function in `redux-core/class-redux-core.php` that were unique to a given site but deterministic and predictable given that they were based on an md5 hash of the site URL with a known salt value of '-redux' and an md5 hash of the previous hash with a known salt value of '-support'. These AJAX actions could be used to retrieve a list of active plugins and their versions, the site's PHP version, and an unsalted md5 hash of site’s `AUTH_KEY` concatenated with the `SECURE_AUTH_KEY`.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Redux Framework Plugin | — | Update redux-framework plugin to version 4.2.13, or a newer patched version | May 15, 2025 | Sep 1, 2021 |
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