optimizingmatters Autoptimize Plugin up to 3.1.14 on WordPress autoptimizeImages.php ao_metabox_save cross site scripting

Summaryinfo

A vulnerability classified as problematic was found in optimizingmatters Autoptimize Plugin up to 3.1.14 on WordPress. The affected element is the function ao_metabox_save of the file autoptimizeImages.php. Such manipulation leads to cross site scripting. This vulnerability is documented as CVE-2026-2352. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in optimizingmatters Autoptimize Plugin up to 3.1.14 on WordPress. Affected by this issue is the function ao_metabox_save of the file autoptimizeImages.php. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

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.

The weakness was released by Hung Nguyen. The advisory is available at wordfence.com. This vulnerability is handled as CVE-2026-2352 since 02/11/2026. The exploitation is known to be easy. The attack may be launched remotely. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

By approaching the search of inurl:autoptimizeImages.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.1.14 eliminates this vulnerability. Applying the patch 60d1e487e536a97ae317784f8aeaf0d2e93cd717 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• WordPress Plugin

Vendor

• optimizingmatters

Name

• Autoptimize Plugin

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 3.1.9
• 3.1.10
• 3.1.11
• 3.1.12
• 3.1.13
• 3.1.14

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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