CVE-2026-3853Network attack vector

Stored DOM XSS via decoded image attribute

Published Sep 5, 2026 · Updated Sep 7, 2026

Stored DOM-based XSS in Elegant Themes Divi 4.27.6 and earlier allows remote authenticated users to execute scripts via image_src. custom.unified.js reads the browser-decoded data-image value and concatenates it into HTML passed to jQuery.after() without re-escaping. Contributor-level access permits payload storage, and the script executes in a visitor's browser when the affected carousel thumbnail is hovered.

CVSS severity6.4
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored DOM-based XSS in Elegant Themes Divi 4.27.6 and earlier allows remote authenticated users to execute scripts via image_src. custom.unified.js reads the browser-decoded data-image value and concatenates it into HTML passed to jQuery.after() without re-escaping. Contributor-level access permits payload storage, and the script executes in a visitor's browser when the affected carousel thumbnail is hovered.

The record

CVE
CVE-2026-3853
Published
Sep 5, 2026
Updated
Sep 7, 2026
Vendor
Elegant Themes
Product
Divi
Classifications
CWE-79, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 7, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=4.27.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Elegant Themes · Diviversion=0 <=4.27.6

Published CVSS scores

6.4WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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