CVE-2021-24693— Simple Download Monitor < 3.9.5 - Contributor+ Stored Cross-Site Scripting via File Thumbnail
Quick assessment
Affected
Unknown Simple Download Monitor
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 The Simple Download Monitor 插件在将其输出到某些页面之前不会转义 File Thumbnail 帖子元数据，这可能允许具有低至贡献者角色的用户执行存储跨站点脚本攻击。 鉴于即使下载处于审查状态也会触发 XSS，贡献
Possible ATT&CK Techniques 3 AI
T1136.001 · Local Account T1059 · Command and Scripting Interpreter T1136 · Create Account
Get alerts for future matching vulnerabilities
Log in to subscribe
I. Basic Information for CVE-2021-24693
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗
Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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
Simple Download Monitor < 3.9.5 - Contributor+ Stored Cross-Site Scripting via File Thumbnail
Source: CVE Program / CVE List V5
Vulnerability Description
The Simple Download Monitor WordPress plugin before 3.9.5 does not escape the "File Thumbnail" post meta before outputting it in some pages, which could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks. Given the that XSS is triggered even when the Download is in a review state, contributor could make JavaScript code execute in a context of a reviewer such as admin and make them create a rogue admin account, or install a malicious plugin
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 The Simple Download Monitor 插件在将其输出到某些页面之前不会转义 File Thumbnail 帖子元数据，这可能允许具有低至贡献者角色的用户执行存储跨站点脚本攻击。 鉴于即使下载处于审查状态也会触发 XSS，贡献
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 | Simple Download Monitor | 3.9.5 ~ 3.9.5 | - |
|
II. Public POCs for CVE-2021-24693
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2021-24693
请登录查看更多情报信息。
Vendor Advisories for CVE-2021-24693 (1)
Same Patch Batch · Unknown · 2021-11-08 · 44 CVEs total
| CVE-2021-24631 | Unlimited PopUps <= 4.5.3 - Author+ SQL Injection | |
| CVE-2021-24628 | Wow Forms <= 3.1.3 - Admin+ SQL Injection | |
| CVE-2021-24629 | Post Content XMLRPC <= 1.0 - Admin+ SQL Injections | |
| CVE-2021-24627 | G Auto-Hyperlink <= 1.0.1 - Admin+ SQL Injection | |
| CVE-2021-24616 | AddToAny Share Buttons < 1.7.48 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24607 | Storefront Footer Text <= 1.0.1 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24594 | Translate WordPress - Google Language Translator < 6.0.12 - Admin+ Stored Cross-Site Scrip | |
| CVE-2021-24575 | WPSchoolPress < 2.1.10 - Multiple Authenticated SQL Injections | |
| CVE-2021-24537 | Similar Posts <= 3.1.5 - Admin+ Arbitrary PHP Code Execution | |
| CVE-2021-24625 | SpiderCatalog <= 1.7.3 - Admin+ SQL Injection | |
| CVE-2021-24630 | Schreikasten <= 0.14.18 - Author+ SQL Injections | |
| CVE-2021-24645 | Booking.com Product Helper < 1.0.2 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24646 | Booking.com Banner Creator < 1.4.3 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24647 | Pie Register < 3.7.1.6 - Unauthenticated Arbitrary Login | |
| CVE-2021-24664 | WPSchoolPress < 2.1.17 - Multiple Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24669 | MAZ Loader < 1.3.3 - Contributor+ SQL Injection | |
| CVE-2021-24674 | Genie WP Favicon <= 0.5.2 - Arbitrary Favicon Change via CSRF | |
| CVE-2021-24695 | Simple Download Monitor < 3.9.6 - Unauthenticated Log Access | |
| CVE-2021-24697 | Simple Download Monitor < 3.9.5 - Reflected Cross-Site Scripting | |
| CVE-2021-24698 | Simple Download Monitor < 3.9.6 - Arbitrary Thumbnails Removal |
Showing top 20 of 44 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Simple Download Monitor
-
CVE-2026-2383
Simple Download Monitor <= 4.0.5 - Authenticated (Contributo -
CVE-2025-8977
Simple Download Monitor <= 3.9.33 - Simple Download Monitor -
CVE-2025-58197
WordPress Simple Download Monitor Plugin <= 3.9.34 - Cross S -
CVE-2025-24663
WordPress Simple Download Monitor plugin <= 3.9.25 - SQL Inj -
CVE-2021-24692
Simple Download Monitor < 3.9.5 - Contributor+ Arbitrary Fil
Same vendor: Unknown
-
CVE-2026-96173
Payments for Hubtel < 1.0.2 - Unauthenticated Order Key Disc -
CVE-2026-96200
Payments for Hubtel < 1.0.2 - Unauthenticated Payment Confir -
CVE-2026-96255
Payments for Hubtel < 1.0.2 - Unauthenticated Payment Gatewa -
CVE-2026-89296
Pro Like Button < 2.0 - Unauthenticated SQLi via 'postid' Pa -
CVE-2026-87973
If-So Dynamic Content 1.9.9 - 1.10.1 - Editor+ Stored XSS vi
Same weakness: CWE-79
-
CVE-2026-85679
Extendify <= 3.1.6 - Unauthenticated Stored Cross-Site Scrip -
CVE-2026-67075
HCL Digital Experience is affected by improper input sanitat -
CVE-2026-12241
Advanced Woo Labels – Product Labels & Badges for WooCommerc -
CVE-2026-96561
AI Engine <= 3.8.0 - Unauthenticated Stored Cross-Site Scrip -
CVE-2026-103590
QloApps through 1.7.0 Reflected XSS via Length of Stay Field
V. Comments for CVE-2021-24693
No comments yet