CVE-2026-63048 Joomla Extension - joomlack.fr - Improper access control in Page Builder CK 1.0.0-3.1.2, 3.4.0-3.4.11, 3.5.0-3.6.2
Authenticated attackers can upload arbitrary files to achieve remote code execution in the Page Builder CK Joomla extension.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-63048?
CVE-2026-63048 is a critical vulnerability in joomlack.fr Page Builder CK extension for Joomla, published on 22 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Joomla Extension - joomlack.fr - Improper access control in Page Builder CK 1.0.0-3.1.2, 3.4.0-3.4.11, 3.5.0-3.6.2 - The Joomla extension Page Builder CK is vulnerable to an authenticated arbitrary file upload, leading to RCE.
Weakness: CWE-434
Which versions are affected by CVE-2026-63048?
How do I fix CVE-2026-63048?
No fix has been published for CVE-2026-63048 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-63048 being exploited?
There is no known exploitation of CVE-2026-63048 in the wild and no public exploit code.
Sources
Also known as GHSA-qjw4-6j2q-9mgr.