The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'ao_post_preload' meta value in all versions up to, and including, 3.1.14. This is due to insufficient input sanitization in the `ao_metabox_save()` function and missing output escaping when the value is rendered into a `<link>` tag in `autoptimizeImages.php`. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page, granted the "Image optimization" or "Lazy-load images" setting is enabled in the plugin configuration.
CVE-2026-2352 is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Autoptimize. It affects Versions up to 3.1.14 and is fixed in 3.1.15.
CVE-2026-2352 is tracked for the Plugin Autoptimize as medium severity with CVSS 6.4. The affected range is Versions up to 3.1.14. Update Autoptimize to 3.1.15 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
autoptimize
View on wordpress.org
|
| CVE | CVE-2026-2352 |
| Patched Versions |
3.1.15
|
| Affected Versions |
Versions up to 3.1.14
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
Autoptimize <= 2.7.7 - Arbitrary File Upload (and Remote Code Execution) via Import Settings
Autoptimize <= 2.7.7 - Race Condition leading to Remote Code Execution
Autoptimize <= 2.7.6 - Authenticated Arbitrary File Upload
Autoptimize <= 3.1.14 - Authenticated (Contributor+) Stored Cross-Site Scripting via Lazy-loaded Image Attributes
Autoptimize <= 3.1.13 - Authenticated (Contributor+) Stored Cross-Site Scripting
Autoptimize <= 3.1.0 - Authenticated (Admin+) Stored Cross-Site Scripting via Critical CSS Settings
Autoptimize <= 2.8.3 - Stored Cross-Site Scripting
Autoptimize <= 3.0.4 - Sensitive Information Disclosure
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