CVE-2026-56290 Details.
Page Builder CK <= 3.5.10 - Unauthenticated Arbitrary File Upload
Atlas does not check this one. Needs requests that change data.
To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check.
About CVE-2026-56290. What It Means.
Joomla Page Builder CK contains an unrestricted file upload vulnerability caused by lack of proper validation, letting unauthenticated attackers upload executable files and achieve remote code execution.
Affected Product. What Is Hit.
- Vendor
- joomlack
- Product
- Joomlack Page Builder CK
FAQ
Common Questions.
Page Builder CK <= 3.5.10 - Unauthenticated Arbitrary File Upload. Joomla Page Builder CK contains an unrestricted file upload vulnerability caused by lack of proper validation, letting unauthenticated attackers upload executable files and achieve remote code execution.
No. To test for this one, the check would have to send requests that could change data on the site. Atlas only ever reads public pages, so it does not run this check. The facts about CVE-2026-56290 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
Yes. CVE-2026-56290 is on the CISA Known Exploited Vulnerabilities list, which means attackers have used it against real targets.
Update Joomlack Page Builder CK to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-56290. Atlas does not run a check for it, so nothing here says whether a particular site is affected.