---
id: CVE-2026-105606
title: >-
  Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in
  Custom Tables < 3.7.8
summary: >-
  Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in
  Custom Tables < 3.7.8 - An unauthenticated attacker can upload a polyglot file
  with an attacker-controlled extension to the web-accessible tmp directory of
  any …
severity: critical
cvss: 9.5
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H'
cvssSource: cna
cwe:
  - CWE-434
vendor: joomlaboat.com
product: Custom Tables extension for Joomla
affected:
  - custom_tables_extension_for_joomla 1.0-3.7.7
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-11-02T19:08:58.622744Z'
published: '2026-11-02'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T18:01:50.612Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105606'
references:
  - url: 'https://joomlaboat.com'
tags:
  - cve.org
epss: 0.00363
epssPercentile: 0.3036
ingestedAt: '2026-11-05T22:38:31.449Z'
---

## Overview

Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8 - An unauthenticated attacker can upload a polyglot file with an attacker-controlled extension to the web-accessible tmp directory of any Joomla site that exposes a public Custom Tables submission form, and the stored path is disclosed in the response. By default the uploaded file is served as static content, so the primary impact is an unauthenticated arbitrary file write to a web-accessible directory, which allows hosting of attacker-controlled content (for example phishing or malware pages) under the victim's domain.

## Affected

- `custom_tables_extension_for_joomla 1.0-3.7.7`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.