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CVE-2021-24782— Flex Local Fonts <= 1.0.0 - Admin+ Stored Cross-Site-Scripting

Quick assessment

Affected
Unknown Flex Local Fonts
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 插件是WordPress开源的一个应用插件。 WordPress plugin 存在跨站脚本漏洞，该漏洞源于 Flex Local Fonts 插件在添加字体时不会转义 Class Name 字段，即使 unfiltered_html 功能被禁止，这也可能允许高权限用户执行跨站点脚本攻击。

AI Predicted 4.4 Difficulty: Moderate EPSS 0.60% · P47
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I. Basic Information for CVE-2021-24782

Vulnerability Information
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Vulnerability Title
Flex Local Fonts <= 1.0.0 - Admin+ Stored Cross-Site-Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Flex Local Fonts WordPress plugin through 1.0.0 does not escape the Class Name field when adding a font, which could allow hight privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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 插件跨站脚本漏洞
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 插件是WordPress开源的一个应用插件。 WordPress plugin 存在跨站脚本漏洞，该漏洞源于 Flex Local Fonts 插件在添加字体时不会转义 Class Name 字段，即使 unfiltered_html 功能被禁止，这也可能允许高权限用户执行跨站点脚本攻击。
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
Unknown Flex Local Fonts 1.0.0 ~ 1.0.0 -

II. Public POCs for CVE-2021-24782

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III. Intelligence Information for CVE-2021-24782

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Vendor Advisories for CVE-2021-24782 (1)

Same Patch Batch · Unknown · 2021-12-13 · 34 CVEs total

CVE-2021-24792 Shiny Buttons <= 1.1.0 - Unauthenticated Stored Cross-Site Scripting
CVE-2021-24855 Display Post Metadata < 1.5.0 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24848 Mediamatic < 2.8.1 - Subscriber+ SQL Injection
CVE-2021-24845 Improved Include Page <= 1.2 - Contributor+ Arbitrary Posts/Pages Access
CVE-2021-24836 Temporary Login Without Password < 1.7.1 - Subscriber+ Plugin's Settings Update
CVE-2021-24819 Page/Post Content Shortcode <= 1.0 - Contributor+ Arbitrary Posts/Pages Access
CVE-2021-24818 WP Limits <= 1.0 - Plugin's Settings Update via CSRF
CVE-2021-24817 Ultimate NoFollow <= 1.4.8 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24795 Filter Portfolio Gallery <= 1.5 - Arbitrary Gallery Deletion via CSRF
CVE-2021-24857 ToTop Link <= 1.7.1 - Unauthenticated PHP Object Injection
CVE-2021-24790 Contact Form Advanced Database <= 1.0.8 - Unauthorised AJAX Calls
CVE-2021-24784 WP Admin Logo Changer <= 1.0 - Plugin's Settings Update via CSRF
CVE-2021-24780 Single Post Exporter <= 1.1.1 - Plugin's Settings Update via CSRF
CVE-2021-24771 Inspirational Quote Rotator <= 1.0.0 - Admin+ Stored Cross-Site Scripting
CVE-2021-24756 WP System Log < 1.0.21 - Unauthenticated Stored Cross-Site Scripting
CVE-2021-24747 SEO Booster < 3.8 - Admin+ SQL Injection
CVE-2021-24705 NEX-Forms < 8.4.3 - Stored Cross-Site Scripting via CSRF
CVE-2021-24972 Pixel Cat Lite < 2.6.3 - Admin+ Stored Cross-Site Scripting
CVE-2021-24859 User Meta Shortcodes <= 0.5 - Contributor+ Unauthorized Arbitrary User Metadata Access
CVE-2021-24861 Quotes Collection <= 2.5.2 - Admin+ SQL Injection

Showing top 20 of 34 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same vendor: Unknown
Same weakness: CWE-79

V. Comments for CVE-2021-24782

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