CVE-2021-25016— Chaty < 2.8.3 - Reflected Cross-Site Scripting
Quick assessment
Affected
Unknown Floating Chat Widget: Contact Icons, Messages, Telegram, Email, SMS, Call Button – Chaty
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插件Chaty 2.8.3之前版本和Chaty Pro 2.8.2之前版本存在跨站脚本漏洞，该漏洞源于插件对搜索参数进行过滤和转义，导致了一个反射的跨站点脚本漏洞。
Public Exploits 1
Nuclei · 1
CVE-2021-25016.yaml [template]
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2021-25016
Vulnerability Information
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Vulnerability Title
Chaty < 2.8.3 - Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Chaty WordPress plugin before 2.8.3 and Chaty Pro WordPress plugin before 2.8.2 do not sanitise and escape the search parameter before outputting it back in the admin dashboard, leading to a Reflected Cross-Site Scripting
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 plugin Chaty 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插件Chaty 2.8.3之前版本和Chaty Pro 2.8.2之前版本存在跨站脚本漏洞，该漏洞源于插件对搜索参数进行过滤和转义，导致了一个反射的跨站点脚本漏洞。
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 | Floating Chat Widget: Contact Icons, Messages, Telegram, Email, SMS, Call Button – Chaty | 2.8.3 ~ 2.8.3 | - |
|
| Unknown | Floating Chat Widget Pro - Chaty Pro | 2.8.2 ~ 2.8.2 | - |
|
II. Public POCs for CVE-2021-25016
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | The Chaty WordPress plugin before 2.8.3 and Chaty Pro WordPress plugin before 2.8.2 do not sanitise and escape the search parameter before outputting it back in the admin dashboard, leading to a Reflected Cross-Site Scripting. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-25016.yaml | POC Details |
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Vendor Advisories for CVE-2021-25016 (1)
Same Patch Batch · Unknown · 2022-01-03 · 20 CVEs total
| CVE-2021-24999 | Booster for Woocommerce < 5.4.9 - Reflected Cross-Site Scripting in PDF Invoicing Module | |
| CVE-2021-25040 | Booking Calendar < 8.9.2 - Reflected Cross-Site Scripting | |
| CVE-2021-25030 | Events Made Easy < 2.2.36 - Subscriber+ SQL Injection | |
| CVE-2021-25027 | PowerPack Addons for Elementor < 2.6.2 - Reflected Cross-Site Scripting | |
| CVE-2021-25023 | Speed Booster Pack < 4.3.3.1 - Admin+ SQL Injection | |
| CVE-2021-25022 | UpdraftPlus < 1.16.66 - Reflected Cross-Site Scripting | |
| CVE-2021-25021 | OMGF < 4.5.12 - Admin+ Arbitrary Folder Deletion via Path Traversal | |
| CVE-2021-25020 | CAOS < 4.1.9 - Admin+ Arbitrary Folder Deletion via Path Traversal | |
| CVE-2021-25001 | Booster for WooCommerce < 5.4.9 - Reflected Cross-Site Scripting in Product XML Feeds Modu | |
| CVE-2021-25000 | Booster for WooCommerce < 5.4.9 - Reflected Cross-Site Scripting in General Module | |
| CVE-2021-24680 | WP Travel Engine < 5.3.1 - Editor+ Stored Cross-Site Scripting | |
| CVE-2021-24991 | WooCommerce PDF Invoices & Packing Slips < 2.10.5 - Reflected Cross-Site Scripting | |
| CVE-2021-24973 | Site Reviews < 5.17.3 - Unauthenticated Stored Cross-Site Scripting | |
| CVE-2021-24964 | LiteSpeed Cache < 4.4.4 - IP Check Bypass to Unauthenticated Stored XSS | |
| CVE-2021-24963 | LiteSpeed Cache < 4.4.4 - Admin+ Reflected Cross-Site Scripting | |
| CVE-2021-24893 | Stars Rating < 3.5.1 - Comments Denial of Service | |
| CVE-2021-24831 | Tab - Accordion, FAQ < 1.3.2 - Unauthenticated AJAX Calls | |
| CVE-2021-24828 | Mortgage Calculator / Loan Calculator < 1.5.17 - Contributor+ Stored Cross-Site Scripting | |
| CVE-2021-24786 | Download Monitor < 4.4.5 - Admin+ SQL Injection |
IV. Related Vulnerabilities
Same vendor: Unknown
-
CVE-2026-77115
Brave Popup Builder < 0.8.6 - Unauthenticated Reflected XSS -
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 -
CVE-2026-13598
RestrictMate < 1.3.0 - Unauthenticated Privilege Escalation
Same weakness: CWE-79
-
CVE-2026-78187
Piwigo Public Authentication cross site scripting -
CVE-2026-78213
Hepta Platforms｜Heptabase - Stored Cross-Site Scripting -
CVE-2026-8630
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-
V. Comments for CVE-2021-25016
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