CVE-2026-56290: Joomlack Page Builder Improper Access Control Vulnerability
Summary
A critical improper access control vulnerability, CVE-2026-56290, has been identified in Joomlack Page Builder. This flaw allows unauthenticated remote code execution through arbitrary file uploads. Federal agencies are mandated to apply mitigations by July 10, 2026, adhering to CISA's risk-based security update guidance.
IFF Assessment
The identified vulnerability allows for remote code execution, posing a significant risk to systems and data.
Severity
The vulnerability allows for unauthenticated arbitrary file upload leading to remote code execution, which is a critical impact. The attack vector is network-based and exploitability is likely high due to the ease of triggering the file upload functionality.
CISA KEV: Listed as actively exploited. Federal patch due: July 10, 2026. Known ransomware use: Unknown.
Defender Context
This vulnerability enables unauthenticated remote code execution, a highly severe threat that attackers can leverage for significant system compromise. Defenders must prioritize patching and mitigation efforts for Joomlack Page Builder installations, especially those exposed to the internet, to prevent potential exploitation and ransomware deployment.