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CVE-2026-3853— Divi <= 4.27.6 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via Video Slider 'image_src' Shortcode Parameter

Quick assessment

Affected
Elegant Themes Divi
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的 Divi 主题存在基于 DOM 的存储型跨站脚本（Stored Cross-Site Scripting）漏洞，影响所有版本至 4.27.6（含）。该漏洞源于 短代码中的 属性。具体来说， 字段未被包含在 白名单中（该白名单仅包含 、 、 ），因此在保存时从未经过 处理。在服务器端，该值通过 渲染到 HTML 的 属性中，而 会将双引号编码为 。然而， 中的客户端 JavaScript 轮播代码使用 jQuery 的 读取该属性，返回的是浏览器解码后的值（即 被还原为 ）。随后，这个解码后的

CVSS 6.4 · Medium

Possible ATT&CK Techniques 1 AI

T1189.001
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I. Basic Information for CVE-2026-3853

Vulnerability Information
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Vulnerability Title
Divi <= 4.27.6 - Authenticated (Contributor+) DOM-Based Stored Cross-Site Scripting via Video Slider 'image_src' Shortcode Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
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 `&quot;`. 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 `&quot;` 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Elegant Themes Divi 0 ~ 4.27.6 -

II. Public POCs for CVE-2026-3853

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III. Intelligence Information for CVE-2026-3853

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Vendor Advisories for CVE-2026-3853 (1)

Vendor Pages for CVE-2026-3853 (1)

IV. Related Vulnerabilities

Same product: Divi
Same vendor: Elegant Themes
Same weakness: CWE-79

V. Comments for CVE-2026-3853

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