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CVE-2021-36841— YITH Maintenance Mode (WordPress plugin) <= 1.3.7 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability.

Quick assessment

Affected
YITH YITH Maintenance Mode (WordPress plugin)
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 插件是WordPress开源的一个应用插件。 WordPress 插件 YITH Maintenance Mode 存在跨站脚本漏洞，该漏洞源于在YITH维护模式(WordPress插件)版本<= 1.3.7的认证中存在存储型跨站点脚本(XSS)漏洞。攻击者可利用该漏洞执行客户端代码。

CVSS 6.9 · Medium EPSS 0.63% · P50

Possible ATT&CK Techniques 1 AI

T1059.007 · JavaScript
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I. Basic Information for CVE-2021-36841

Vulnerability Information
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Vulnerability Title
YITH Maintenance Mode (WordPress plugin) <= 1.3.7 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability.
Source: CVE Program / CVE List V5
Vulnerability Description
Authenticated Stored Cross-Site Scripting (XSS) vulnerability in YITH Maintenance Mode (WordPress plugin) versions <= 1.3.7, vulnerable parameter &yith_maintenance_newsletter_submit_label. Possible even when unfiltered HTML is disallowed by WordPress configuration.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N
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 YITH Maintenance Mode 存在跨站脚本漏洞，该漏洞源于在YITH维护模式(WordPress插件)版本<= 1.3.7的认证中存在存储型跨站点脚本(XSS)漏洞。攻击者可利用该漏洞执行客户端代码。
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
YITH YITH Maintenance Mode (WordPress plugin) <= 1.3.7 ~ 1.3.7 -

II. Public POCs for CVE-2021-36841

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III. Intelligence Information for CVE-2021-36841

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Vendor Advisories for CVE-2021-36841 (1)

Other References for CVE-2021-36841 (1)

IV. Related Vulnerabilities

Same product: YITH Maintenance Mode (WordPress plugin)
Same vendor: YITH
Same weakness: CWE-79