CVE Watch7 oct 2026

CVE-2026-56290

Joomlack Page Builder Improper Access Control Vulnerability

CVSS

9.8

Crítico

EPSS

30.9%

p98

KEV

SÍ

7 jul 2026

Exploit Today

0-100

Publicado: 29 jun 2026 · Última mod.: 7 oct 2026 · CWE-434

EPSS · 30d

30.4%EPSS · 30 días30.9%

2026-09-162026-10-14

Ficha del catálogo KEV

Producto

Joomlack / Page Builder

Vulnerabilidad

Joomlack Page Builder Improper Access Control Vulnerability

Añadido a KEV

7 jul 2026

Remediar antes de

10 jul 2026

Uso conocido en ransomware

Descripción resumida

Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload.

Acción requerida

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.

Notas

https://www.joomlack.fr/en/joomla-extensions/page-builder-ck ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-56290

Descripción técnica

Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Referencias oficiales

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