CVE-2021-24925— Modern Events Calendar Lite < 6.1.5 - Reflected Cross-Site Scripting
Quick assessment
Affected
Unknown Modern Events Calendar Lite
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 Plugins Modern Events Calendar Lite 存在跨站脚本漏洞，该漏洞源于在6.1.5之前的Modern Events Calendar Lite WordPress插件在输出回响应之前，没有对其mec列表的当前月份分隔符参数进行处理和逃逸，加载更多的AJAX
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-24925
Vulnerability Information
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Vulnerability Title
Modern Events Calendar Lite < 6.1.5 - Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Modern Events Calendar Lite WordPress plugin before 6.1.5 does not sanitise and escape the current_month_divider parameter of its mec_list_load_more AJAX call (available to both unauthenticated and authenticated users) before outputting it back in the response, leading to a Reflected Cross-Site Scripting issue
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 Plugins Modern Events Calendar Lite 存在跨站脚本漏洞，该漏洞源于在6.1.5之前的Modern Events Calendar Lite WordPress插件在输出回响应之前，没有对其mec列表的当前月份分隔符参数进行处理和逃逸，加载更多的AJAX
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 | Modern Events Calendar Lite | 6.1.5 ~ 6.1.5 | - |
|
II. Public POCs for CVE-2021-24925
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-24925 (1)
Same Patch Batch · Unknown · 2021-12-13 · 34 CVEs total
| CVE-2021-24790 | Contact Form Advanced Database <= 1.0.8 - Unauthorised AJAX Calls | |
| 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-2021-24792 | 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-2021-24784 | WP Admin Logo Changer <= 1.0 - Plugin's Settings Update via CSRF | |
| CVE-2021-24782 | Flex Local Fonts <= 1.0.0 - Admin+ Stored Cross-Site-Scripting | |
| 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-2021-24857 | ToTop Link <= 1.7.1 - Unauthenticated PHP Object Injection | |
| CVE-2021-24859 | User Meta Shortcodes <= 0.5 - Contributor+ Unauthorized Arbitrary User Metadata Access |
Showing top 20 of 34 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Modern Events Calendar Lite
-
CVE-2021-4458
Modern Events Calendar Lite <= 6.3.0 - Unauthenticated SQL I -
CVE-2025-5733
Modern Events Calendar <= 7.21.9 - Information Exposure -
CVE-2023-4021
Modern Events Calendar lite < 7.1.0 - Authenticated (Admin+) -
CVE-2023-1400
Modern Events Calendar lite < 6.5.2 - Admin+ Stored XSS -
CVE-2022-30533
Modern Events Calendar Lite 跨站脚本漏洞
Same vendor: Unknown
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CVE-2026-77115
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CVE-2026-77116
Brave Popup Builder < 0.8.6 - Subscriber+ Unpublished Popup -
CVE-2026-77003
Content Mask 1.8.0 - 1.8.5.4 - Contributor Publish Capabilit -
CVE-2026-14853
WooCommerce Bookings < 3.9.0 - Subscriber+ Draft Bookable Pr -
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RestrictMate < 1.3.0 - Unauthenticated Privilege Escalation
Same weakness: CWE-79
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justhtml before 1.12.0 Mutation XSS via Raw Text Elements -
CVE-2026-8445
justhtml before 1.12.0 Sanitizer Bypass via Markdown -
CVE-2026-77088
justhtml 0.9.0 through 1.21.0 Cross-Site Scripting via code- -
CVE-2026-74793
justhtml before 3.11.0 XSS via selectedcontent projection -
CVE-2026-6827
justhtml before 1.17.0 Multiple Cross-Site Scripting Vulnera
V. Comments for CVE-2021-24925
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