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CVE-2026-105606— Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8

Quick assessment

Affected
joomlaboat.com Custom Tables extension for Joomla
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Joomla 扩展 - joomlaboat.com - 自定义表格（Custom Tables）插件（版本低于 3.7.8）存在未授权任意文件上传漏洞。未认证的攻击者可以向任何公开了自定义表格提交表单的 Joomla 站点的 Web 可访问 tmp 目录上传带有攻击者可控扩展名的多态（polyglot）文件，且上传文件的存储路径会在响应中泄露。默认情况下，上传的文件会被作为静态内容提供，因此主要影响是允许未认证的攻击者在 Web 可访问目录中执行任意文件写入，从而在受害者的域名下托管攻击者控制的内容（例如钓鱼页面

CVSS 9.5 · Critical

Affected Version Matrix 1

VendorProduct Version RangeStatus
joomlaboat.com Custom Tables extension for Joomla 1.0-3.7.7 affected
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I. Basic Information for CVE-2026-105606

Vulnerability Information
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Vulnerability Title
Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
危险类型文件的不加限制上传
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
joomlaboat.com Custom Tables extension for Joomla 1.0-3.7.7 -

II. Public POCs for CVE-2026-105606

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-105606

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Other References for CVE-2026-105606 (1)

IV. Related Vulnerabilities

Same vendor: joomlaboat.com
Same weakness: CWE-434