Elegant mes Divi Plugin up to 4.27.6 on WordPress et_pb_video_slider_item custom.unified.js esc_url_raw image_src cross site scripting

Summaryinfo

A vulnerability classified as problematic was found in Elegant mes Divi Plugin up to 4.27.6. The impacted element is the function esc_url_raw of the file custom.unified.js of the component et_pb_video_slider_item. The manipulation of the argument image_src results in cross site scripting. This vulnerability is reported as CVE-2026-3853. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Elegant mes Divi Plugin up to 4.27.6. Affected is the function esc_url_raw of the file custom.unified.js of the component et_pb_video_slider_item. The manipulation of the argument image_src with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

The Divi theme for WordPress is vulnerable to DOM-Based Stored Cross-Site Scripting via the `image_src` attribute of the `et_pb_video_slider_item` shortcode in all versions up to, and including, 4.27.6. This is due to the `image_src` field not being included in the `$url_options` whitelist (which only contains `url`, `button_link`, `button_url`), so it never receives `esc_url_raw()` at save time. On the server side, the value is rendered into a `data-image` HTML attribute using `esc_attr()`, which encodes double quotes as `"`. However, the client-side JavaScript carousel code in `custom.unified.js` reads this attribute using jQuery's `.data('image')`, which returns the browser-decoded value (with `"` decoded back to `"`). The decoded value is then concatenated directly into an HTML string and injected into the DOM via `jQuery.after()` without re-escaping. 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 hovers over the carousel thumbnail.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-3853 since 03/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-71886). Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• Elegant mes

Name

• Divi Plugin

Version

• 4.27.0
• 4.27.1
• 4.27.2
• 4.27.3
• 4.27.4
• 4.27.5
• 4.27.6

CPE 2.3info

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CPE 2.2info

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Once again VulDB remains the best source for vulnerability data.

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