CVE-2026-56290
Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0
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.
INFO
Published Date :
June 29, 2026, 2:31 p.m.
Last Modified :
June 29, 2026, 2:31 p.m.
Remotely Exploit :
Yes !
Source :
Joomla
Affected Products
The following products are affected by CVE-2026-56290
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | CRITICAL | 6ff30186-7fb7-4ad9-be33-533e7b05e586 |
Solution
- Update the Joomla extension Page Builder CK.
- Restrict file upload permissions.
- Validate uploaded file types.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-56290 vulnerability anywhere in the article.