CVE-2026-56290
Joomlack Page Builder Improper Access Control Vulnerability
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-07-07. Federal due date: 2026-07-10.
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.
Public exploit code
Working exploit or proof of concept code has been published for this vulnerability. Treat unpatched systems as at risk.
- Joomla Page Builder CK 3.5.10 - Arbitrary File Upload2026-07-08 · webapps · multiple
Impact
Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Joomlack | Page Builder Ck | before 3.6.0 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- https://www.joomlack.fr/
- https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3
- https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-56290