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CVE-2026-78079— Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in Helix Ultimate < 2.2.10

Quick assessment

Affected
joomshaper.com Helix Ultimate 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 - joomshaper.com - Helix Ultimate 版本低于 2.2.10 中通过 Base64 返回参数实现开放重定向 - 返回重定向参数接受任意 Base64 字符串，且未通过 验证解析后的目标是否为内部站点 URL。

CVSS 5.3 · Medium

Possible ATT&CK Techniques 1 AI

T1083 · File and Directory Discovery
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I. Basic Information for CVE-2026-78079

Vulnerability Information
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Vulnerability Title
Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in Helix Ultimate < 2.2.10
Source: CVE Program / CVE List V5
Vulnerability Description
Joomla Extension - joomshaper.com - Open Redirect via Base64 Return Parameter in Helix Ultimate < 2.2.10 - Return redirect parameters accepted arbitrary Base64 strings without verifying whether the resolved target was an internal site URL via Uri::isInternal.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
joomshaper.com Helix Ultimate extension for Joomla 1.0-2.2.9 -

II. Public POCs for CVE-2026-78079

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-78079

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Vendor Pages for CVE-2026-78079 (1)

Same Patch Batch · joomshaper.com · 2026-08-31 · 5 CVEs total

CVE-2026-78078 8.9 HIGH Joomla Extension - joomshaper.com - Privileged File Upload Bypass via Content Spoofing in
CVE-2026-78077 8.6 HIGH Joomla Extension - joomshaper.com - Stored Cross-Site Scripting (XSS) in MegaMenu Layout
CVE-2026-78076 5.1 MEDIUM Joomla Extension - joomshaper.com - Broken Access Control & Missing Authorization in MegaM
CVE-2026-78075 5.1 MEDIUM Joomla Extension - joomshaper.com - Broken Object-Level Authorization in Blog Image Deleti

IV. Related Vulnerabilities

Same product: Helix Ultimate extension for Joomla
Same vendor: joomshaper.com
Same weakness: CWE-601

V. Comments for CVE-2026-78079

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