PT-2026-53285 · Joomla · Page Builder Ck

Phil Taylor · Published 2026-06-29 · Updated 2026-06-29 · CVE-2026-56290

Positive Technologies (AI Summary)

CVSS v4.0

10

Critical

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red

Name of the Vulnerable Software and Affected Versions Page Builder CK versions prior to 3.6.0

Description The Joomla extension Page Builder CK contains a flaw that allows an unauthenticated user to perform an arbitrary file upload. This issue enables the uploading of executable files, which can lead to full Remote Code Execution (RCE), a state where an attacker can execute arbitrary commands on the server.

Recommendations Update Page Builder CK to version 3.6.0.

Fix

RCE

Improper Access Control

Weakness Enumeration

CWE-284

Related Identifiers

CVE-2026-56290

Affected Products

Page Builder Ck

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-56290 · Security Note
• https://twitter.com/infoflowcloud/status/2071643819150364696 · Twitter Post
• https://twitter.com/CVEnew/status/2071643305884963259 · Twitter Post
• https://twitter.com/SecAlertsCo/status/2071633966176649620 · Twitter Post
• https://joomlack.fr · Note