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CVE-2026-3850

Divi <= 4.27.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Contact Form 'redirect_url' Shortcode Parameter

CVSS score

6.4

EPSS probability

%0.3

Risk score

0.0

Published

1 mo ago

OverviewPublic Exploits (0)NewsroomVulnerability Timeline
Patch status has not yet been verified

Resmî kaynaklarda yeterli kanıt bulunamadı. Bu sonuç “yama yok” anlamına gelmez.

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

Divi <= 4.27.6 - Stored XSS via Contact Form 'redirect_url' Parameter

Sources read

2

Source agreement

Tam uyum

Evidence confidence

%61

Short explanation

The Divi WordPress theme is vulnerable to stored cross-site scripting via the 'redirect_url' parameter in the et_pb_contact_form shortcode. Attackers with Contributor-level access can inject arbitrary JavaScript via a javascript: URI after form submission. CVSS score is 6.4 (MEDIUM). Patch status is UNKNOWN. No fixed version is publicly documented.

Why does it matter?

This vulnerability enables authenticated attackers to execute arbitrary JavaScript in user-facing content after form submission. It poses a direct threat to user data and site integrity, especially in public-facing forms. The lack of a confirmed patch increases exposure risk for affected systems.

What should be done?

  • Upgrade to Divi version 4.27.7 or later (if available)
  • Follow official vendor advisories for patch details
Note on uncertainty

The sources give limited detail on some technical conditions. Review the chain of evidence below before deciding how to act.

Chain of evidence and sources3 verified claims

WordPress için Divi teması, `et_pb_contact_form` kısa kodunun `redirect_url` parametresi üzerinden, 4.27.6 sürümüne kadar olan tüm sürümlerde depolanan bir cross-site scripting (XSS) hatası içerir. Bu hata, bir iletişim formu gönderildiğinde, Contributor seviyesinde veya üzeri erişim sahibi yetkilendirilmiş saldırıcılara, `javascript:` URI üzerinden herhangi bir JavaScript kodunu eklemesini sağlar.

S0 · daybreach-canonical

Hata, `redirect_url` parametresinin `data-redirect_url` HTML özniteliğine render edilmeden önce `esc_attr()` ile yerine `esc_url()` kullanılmamasından kaynaklanır. Ayrıca, `class-et-builder-element.php` dosyasındaki `url_options` dizisinde `redirect_url` bulunmaması nedeniyle, kısa kod analiz sırasında `esc_url_raw()` sanitizasyonu sağlanamaz.

S0 · daybreach-canonical

CVSS puanı 6.4 (ORTA) ve CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N vektörüdür. Yama durumu bilinmiyor; resmî kaynaklarda bir düzeltme varlığı ya da yayınlanma durumu doğrulanamamıştır.

S0 · daybreach-canonical
Show the technical text from the sources

The Divi theme for WordPress is vulnerable to Stored Cross-Site Scripting via the `redirect_url` parameter of the `et_pb_contact_form` shortcode in all versions up to, and including, 4.27.6. This is due to the `redirect_url` attribute being sanitized with `esc_attr()` instead of `esc_url()` before being rendered into the `data-redirect_url` HTML data attribute. Additionally, `redirect_url` is absent from the hardcoded `$url_options` array in `class-et-builder-element.php`, so it does not receive `esc_url_raw()` sanitization during shortcode parsing. After a successful form submission, client-side JavaScript reads this data attribute and passes it directly to `window.location.href`, executing arbitrary JavaScript from a `javascript:` URI. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that execute whenever a user submits the contact form.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

CWE: CWE-79

Explanation produced with the local qwen3:4b-instruct model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-3850 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

IDVENDORPRODUCTACTION
1Elegant ThemesDivi View
Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCOREVERSIONSEVERITYVECTORSOURCE
6.4CVSS V3_1MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NCVE CNA
6.4CVSS V31MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NNVD

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Confirm the affected product and version against the source evidence above.
Restrict access to internet-facing services and apply network segmentation.
Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.
Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-3850 is associated with the following CWEs:

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-3850 weaknesses.

CAPEC-66: SQL InjectionCAPEC-126: Path TraversalCAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden
PermissionsLow
UserGerekmiyor

Official Sources and Advisories

https://www.wordfence.com/threat-intel/vulnerabilities/id/768fb279-8d35-4002-91d8-c6a3b0f8f51d?source=cvevendor-advisoryhttps://www.divichangelog.com/divi-updatevendor-advisory

CVSS Vector Radar Chart

6.4 / 10
Attack VectorNetworkComplexityLowPrivilegesLowUser Interact.NoneConfidentialityLowIntegrityNoneAvailabilityNone

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow privileges
User InteractionNone required
Confidentiality (Gizlilik)Low
Integrity (Bütünlük)None
Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

İncelenen resmî kaynaklarda yama durumu doğrulanamadı. Bu sonuç “yama yok” anlamına gelmez.

Follow the vendor

ET
Elegant Themes logo
Elegant Themes

Weakness Type (CWE & CAPEC)

CWE-79

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