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CVE-2021-42547— reflected XSS in search functionality of WP Cloud Plugins - Out-of-the-Box

Quick assessment

Affected
WP Cloud Plugins Out-of-the-Box
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插件存在安全漏洞，该漏洞源于在1.20.3之前的Wordpress插件Out-of-the-Box搜索功能中输入验证不足，允许未经身份验证的用户制造一个跨站点脚本攻击。

CVSS 4.7 · Medium EPSS 0.73% · P51
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I. Basic Information for CVE-2021-42547

Vulnerability Information
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Vulnerability Title
reflected XSS in search functionality of WP Cloud Plugins - Out-of-the-Box
Source: CVE Program / CVE List V5
Vulnerability Description
Insufficient Input Validation in the search functionality of Wordpress plugin Out-of-the-Box prior to 1.20.3 allows unauthenticated user to craft a reflected Cross-Site Scripting attack.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/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插件存在安全漏洞，该漏洞源于在1.20.3之前的Wordpress插件Out-of-the-Box搜索功能中输入验证不足，允许未经身份验证的用户制造一个跨站点脚本攻击。
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
WP Cloud Plugins Out-of-the-Box unspecified ~ 1.20.3 -

II. Public POCs for CVE-2021-42547

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2021-42547

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Other References for CVE-2021-42547 (1)

Same Patch Batch · WP Cloud Plugins · 2021-12-13 · 4 CVEs total

CVE-2021-42546 4.7 MEDIUM Reflected XSS in search functionality of WP Cloud Plugins - Use-Your-Drive
CVE-2021-42548 4.7 MEDIUM reflected XSS in search functionality of WP Cloud Plugins - Share-one-Drive
CVE-2021-42549 4.7 MEDIUM reflected XSS in search functionality of WP Cloud Plugins - Lets-Box

IV. Related Vulnerabilities

Same vendor: WP Cloud Plugins
Same weakness: CWE-79

V. Comments for CVE-2021-42547

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