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CVE-2021-36884— WordPress Backup Migration plugin <= 1.1.5 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability

Quick assessment

Affected
Backupbliss Backup Migration (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是WordPress（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 Backup Migration 存在跨站脚本漏洞，该漏洞源于在WordPress Backup Migration插件<= 1.1.5版本中发现认证持久性跨站点脚本(XSS)漏洞。攻击者可利用该漏洞执行客户端代码。

CVSS 4.8 · Medium EPSS 0.55% · P44
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I. Basic Information for CVE-2021-36884

Vulnerability Information
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Vulnerability Title
WordPress Backup Migration plugin <= 1.1.5 - Authenticated Persistent Cross-Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Authenticated Persistent Cross-Site Scripting (XSS) vulnerability discovered in WordPress Backup Migration plugin <= 1.1.5 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/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 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress是WordPress（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 Backup Migration 存在跨站脚本漏洞，该漏洞源于在WordPress Backup Migration插件<= 1.1.5版本中发现认证持久性跨站点脚本(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
Backupbliss Backup Migration (WordPress plugin) <= 1.1.5 ~ 1.1.5 -

II. Public POCs for CVE-2021-36884

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III. Intelligence Information for CVE-2021-36884

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Vendor Advisories for CVE-2021-36884 (1)

Other References for CVE-2021-36884 (1)

IV. Related Vulnerabilities

Same vendor: Backupbliss
Same weakness: CWE-79

V. Comments for CVE-2021-36884

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