Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since July 7, 2026.
CVE-2026-56290
Joomlack Page Builder Improper Access Control Vulnerability
Added to KEV July 7, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-56290
- CWE
- CWE-284
- Affected products
- Page Builder · Joomlack Page Builder · Joomlack
What happened
Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload.
What it means for your business
Joomlack Page Builder is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-56290). Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload. CISA remediation due date: 2026-07-10. PremierePC tracks KEV alerts for Upstate SC businesses — patch or open a ticket if you need help verifying exposure.
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.
CISA due date: July 10, 2026
Sources
Need help patching?
PremierePC monitors KEV alerts for managed clients and helps teams prioritize remediation before attackers do.