CVE-2026-56290

CRITICAL9.8

CISA KEV

Published 2026-06-29 · Updated 2026-07-07 · Source security@joomla.org

Description

The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

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

CWE-434CWE-434

CISA Known-Exploited Vulnerability

Product: Joomlack — Page Builder

Name: Joomlack Page Builder Improper Access Control Vulnerability

Date added: 2026-07-07 · Due: 2026-07-10

Required action: 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.

References

View on NVD

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