CVE-2026-63048Network attack vector

Authenticated code execution via unrestricted file upload

Published Jul 22, 2026 · Updated Jul 22, 2026

Unrestricted file upload in Joomlack Page Builder CK 1.0.0 through 3.6.2 allows remote authenticated users to execute code. The published record identifies the extension's file-upload functionality but does not disclose the handler or the access-control and file-type validation failure that accepts executable content. A valid Joomla account with low privileges is required, and successful upload permits arbitrary code execution in the web server's security context.

CVSS severity9.4
Critical
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Joomlack Page Builder CK 1.0.0 through 3.6.2 allows remote authenticated users to execute code. The published record identifies the extension's file-upload functionality but does not disclose the handler or the access-control and file-type validation failure that accepts executable content. A valid Joomla account with low privileges is required, and successful upload permits arbitrary code execution in the web server's security context.

The record

CVE
CVE-2026-63048
Published
Jul 22, 2026
Updated
Jul 22, 2026
Vendor
Joomlack
Product
Page Builder CK
Classifications
CWE-434, CAPEC-242, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0.0-3.6.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Joomlack · Page Builder CKversion=1.0.0-3.6.2

Published CVSS scores

9.4Joomla! ProjectCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
CAPEC-242Code Injection
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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