The SpeedyCache plugin for WordPress is vulnerable to Arbitrary File Read via Path Traversal in all versions up to, and including, 1.3.8. This is due to a mismatch between CSS URL validation (which allows query strings like `.css?...`) and path resolution (which strips query strings), combined with no validation that the resolved file is actually a CSS file. This makes it possible for authenticated attackers, with Administrator-level access and above, to read arbitrary files from the server (including `wp-config.php` and `/etc/passwd`) by injecting crafted `<link>` tags into page content, with the file contents written to publicly accessible cache files.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Speedycache Plugin | — | Update speedycache plugin to version 1.3.9, or a newer patched version | Jul 28, 2026 | Jul 27, 2026 |
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