maltathemes Easy Social Photos Gallery Plugin up to 3.1.2 on WordPress Shortcode sanitize_text_field cross site scripting

Summaryinfo

A vulnerability was found in maltathemes Easy Social Photos Gallery Plugin up to 3.1.2 on WordPress. It has been declared as problematic. Affected by this vulnerability is the function sanitize_text_field of the component Shortcode Handler. Executing a manipulation can lead to cross site scripting. This vulnerability appears as CVE-2026-4085. The attack may be performed from remote. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability has been found in maltathemes Easy Social Photos Gallery Plugin up to 3.1.2 on WordPress and classified as problematic. This vulnerability affects the function sanitize_text_field of the component Shortcode Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

The Easy Social Photos Gallery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'wrapper_class' shortcode attribute of the 'my-instagram-feed' shortcode in all versions up to, and including, 3.1.2. This is due to insufficient input sanitization and output escaping on user supplied attributes. Specifically, the plugin uses sanitize_text_field() instead of esc_attr() when outputting the 'wrapper_class' attribute inside a double-quoted HTML class attribute. Since sanitize_text_field() does not encode double quotes, an attacker can break out of the class attribute and inject arbitrary HTML event handlers. 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.

The weakness was presented by Muhammad Yudha. The advisory is available at wordfence.com. This vulnerability was named CVE-2026-4085 since 03/12/2026. The exploitation appears to be easy. The attack can be initiated 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.

Upgrading to version 3.1.2 eliminates this vulnerability.

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Productinfo

Type

• Photo Gallery Software

Vendor

• maltathemes

Name

• Easy Social Photos Gallery Plugin

Version

• 3.1.0
• 3.1.1
• 3.1.2

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CPE 2.2info

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