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CVE-2021-24563— Frontend Uploader <= 1.3.2 - Unauthenticated Stored Cross-Site Scripting

Quick assessment

Affected
Unknown Frontend Uploader
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件是WordPress开源的一个应用插件。 WordPress 插件 Frontend Uploader 1.3.2之前版本存在跨站脚本漏洞，该漏洞源于插件并不阻止HTML文件的上传，例如允许未经认证的用户上传包含JavaScript的恶意HTML文件，当有人直接访问该文件时将触发恶意代码。

AI Predicted 6.1 Difficulty: Trivial EPSS 26.38% · P98

Public Exploits 1

ExploitDB · 1 EDB-50655 [webapps]

Possible ATT&CK Techniques 1 AI

T1505.003 · Web Shell
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I. Basic Information for CVE-2021-24563

Vulnerability Information
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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Frontend Uploader <= 1.3.2 - Unauthenticated Stored Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Frontend Uploader WordPress plugin through 1.3.2 does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly
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 插件是WordPress开源的一个应用插件。 WordPress 插件 Frontend Uploader 1.3.2之前版本存在跨站脚本漏洞，该漏洞源于插件并不阻止HTML文件的上传，例如允许未经认证的用户上传包含JavaScript的恶意HTML文件，当有人直接访问该文件时将触发恶意代码。
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 Frontend Uploader 1.3.2 ~ 1.3.2 -

II. Public POCs for CVE-2021-24563

# POC Description Source Link Shenlong Link
1 The plugin does not prevent HTML files from being uploaded via its form, allowing unauthenticated user to upload a malicious HTML file containing JavaScript for example, which will be triggered when someone access the file directly https://github.com/V35HR4J/CVE-2021-24563 POC Details
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III. Intelligence Information for CVE-2021-24563

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Vendor Advisories for CVE-2021-24563 (1)

Exploits & Public PoCs for CVE-2021-24563 (1)

Same Patch Batch · Unknown · 2021-10-11 · 17 CVEs total

CVE-2021-24737 Comments - wpDiscuz <= 7.3.0 - Admin+ Stored Cross-Site Scripting
CVE-2021-24720 GeoDirectory < 2.1.1.3 - Authenticated Stored Cross-Site Scripting (XSS)
CVE-2021-24719 Enfold Theme < 4.8.4 - Reflected Cross-Site Scripting (XSS)
CVE-2021-24712 Appointment Hour Booking – WordPress Booking Plugin < 1.3.17 - Authenticated Stored XSS
CVE-2021-24711 Software License Manager < 4.5.1 - Arbitrary Domain Deletion via CSRF
CVE-2021-24709 Weather Effect < 1.3.6 - Admin+ Stored Cross-Site Scripting
CVE-2021-24691 Quiz And Survey Master < 7.3.2 - Admin+ Stored Cross-Site Scripting
CVE-2021-24690 Chained Quiz < 1.2.7.2 - Authenticated Stored Cross Site Scripting
CVE-2021-24683 Weather Effect < 1.3.4 - CSRF to Stored Cross-Site Scripting
CVE-2021-24681 Duplicate Page <= 4.4.2 - Admin+ Stored Cross-Site Scripting
CVE-2021-24656 Simple Social Media Share Buttons < 3.2.4 - Authenticated Stored Cross-Site Scripting
CVE-2021-24651 Poll Maker < 3.4.2 - Unauthenticated Time Based SQL Injection
CVE-2021-24577 Coming Soon and Maintenance Mode < 3.5.3 - Authenticated Stored XSS
CVE-2021-24576 Easy Accordion < 2.0.22 - Authenticated Stored XSS
CVE-2021-24546 EditorsKit < 1.31.6 - Contributor+ Arbitrary PHP Code Execution
CVE-2021-24545 WP HTML Author Bio <= 1.2.0 - Author+ Stored Cross-Site Scripting

IV. Related Vulnerabilities

Same vendor: Unknown
Same weakness: CWE-79

V. Comments for CVE-2021-24563

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