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CVE-2026-34424— Smart Slider 3 Pro 3.5.1.35 Supply Chain Attack Remote Access Toolkit

Quick assessment

Affected
Nextendweb Smart Slider 3 Pro for WordPress
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.

WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Smart Slider 3 Pro 3.5.1.35版本存在安全漏洞，该漏洞源于受损的更新系统注入了多阶段远程访问工具包，可能导致未经身份验证的攻击者执行任意代码和命令，包括通过HTTP标头触发预身份验证远程she

CVSS 9.8 · Critical EPSS 0.97% · P61

Affected Version Matrix 6

VendorProduct Version RangeStatus
Nextendweb Smart Slider 3 Pro for Joomla 3.5.1.35 affected
≤ 3.5.1.34 unaffected
3.5.1.36 unaffected
Nextendweb Smart Slider 3 Pro for WordPress 3.5.1.35 affected
≤ 3.5.1.34 unaffected
3.5.1.36 unaffected
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I. Basic Information for CVE-2026-34424

Vulnerability Information
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Vulnerability Title
Smart Slider 3 Pro 3.5.1.35 Supply Chain Attack Remote Access Toolkit
Source: CVE Program / CVE List V5
Vulnerability Description
Smart Slider 3 Pro version 3.5.1.35 for WordPress and Joomla contains a multi-stage remote access toolkit injected through a compromised update system that allows unauthenticated attackers to execute arbitrary code and commands. Attackers can trigger pre-authentication remote shell execution via HTTP headers, establish authenticated backdoors accepting arbitrary PHP code or OS commands, create hidden administrator accounts, exfiltrate credentials and access keys, and maintain persistence through multiple injection points including must-use plugins and core file modifications.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
内嵌的恶意代码
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Smart Slider 3 Pro 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin Smart Slider 3 Pro 3.5.1.35版本存在安全漏洞，该漏洞源于受损的更新系统注入了多阶段远程访问工具包，可能导致未经身份验证的攻击者执行任意代码和命令，包括通过HTTP标头触发预身份验证远程she
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Nextendweb Smart Slider 3 Pro for WordPress 3.5.1.35 -
Nextendweb Smart Slider 3 Pro for Joomla 3.5.1.35 -

II. Public POCs for CVE-2026-34424

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III. Intelligence Information for CVE-2026-34424

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Vendor Advisories for CVE-2026-34424 (1)

News Coverage for CVE-2026-34424 (2)

IV. Related Vulnerabilities

Same vendor: Nextendweb
Same weakness: CWE-506

V. Comments for CVE-2026-34424

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