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NVD Vulnerability Details :
CVE-2026-56290
Analyzed
More InfoOfficial Page
Source-security@joomla.org
View Known Exploited Vulnerability (KEV) details
Published At-29 Jun, 2026 | 15:16
Updated At-02 Jul, 2026 | 18:53

The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary4.010.0CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red
Primary3.19.8CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
N/A
Type: Secondary
Version: 4.0
Base score: 10.0
Base severity: CRITICAL
Vector:
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red
Type: Primary
Version: 3.1
Base score: 9.8
Base severity: CRITICAL
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Type: N/A
Version:
Base score:
Base severity: N/A
Vector:
CPE Matches
joomlack
joomlack
>>page_builder_ck>>Versions up to 3.6.0(inclusive)
cpe:2.3:a:joomlack:page_builder_ck:*:*:*:*:*:joomla\!:*:*
Weaknesses
CWE IDTypeSource
CWE-284Secondarysecurity@joomla.org
CWE-434Primarynvd@nist.gov
CWE ID: CWE-284
Type: Secondary
Source: security@joomla.org
CWE ID: CWE-434
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://www.joomlack.fr/security@joomla.org
Product
https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3134c704f-9b21-4f2e-91b3-4a467353bcc0
Issue Tracking
Patch
https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/134c704f-9b21-4f2e-91b3-4a467353bcc0
Exploit
Third Party Advisory
Hyperlink: https://www.joomlack.fr/
Source: security@joomla.org
Resource:
Product
Hyperlink: https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joomla-3
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Issue Tracking
Patch
Hyperlink: https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce/
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Resource:
Exploit
Third Party Advisory
Change History
0Changes found
Details not found