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CVE-2021-36851— WordPress Testimonial Slider plugin <= 3.5.8.3 - Cross-Site Scripting (XSS) vulnerability

Quick assessment

Affected
Web-Settler Testimonial Slider – Free Testimonials Slider Plugin (WordPress plugin)
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是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是WordPress开源的一个应用插件。 WordPress plugin Free Testimonials Slider Plugin 存在安全漏洞，该漏洞源于通过参数mpsp_posts_bg_color、mpsp_posts_description_color、mpsp_slide_nav_button_color，验证（编辑或更

CVSS 4.1 · Medium EPSS 0.57% · P46

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2021-36851

Vulnerability Information
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Vulnerability Title
WordPress Testimonial Slider plugin <= 3.5.8.3 - Cross-Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Authenticated (editor or higher user role) Cross-Site Scripting (XSS) vulnerability in Web-Settler Testimonial Slider – Free Testimonials Slider Plugin (WordPress plugin) via parameters mpsp_posts_bg_color, mpsp_posts_description_color, mpsp_slide_nav_button_color.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin Free Testimonials Slider Plugin 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是Wordpress基金会的一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是WordPress开源的一个应用插件。 WordPress plugin Free Testimonials Slider Plugin 存在安全漏洞，该漏洞源于通过参数mpsp_posts_bg_color、mpsp_posts_description_color、mpsp_slide_nav_button_color，验证（编辑或更
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Web-Settler Testimonial Slider – Free Testimonials Slider Plugin (WordPress plugin) <= 3.5.8.3 ~ 3.5.8.3 -

II. Public POCs for CVE-2021-36851

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-36851

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Vendor Advisories for CVE-2021-36851 (1)

Other References for CVE-2021-36851 (1)

IV. Related Vulnerabilities

Same vendor: Web-Settler
Same weakness: CWE-79

V. Comments for CVE-2021-36851

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