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CVE-2021-24956— Blog2Social < 6.8.7 - Reflected Cross-Site Scripting

Quick assessment

Affected
Unknown Blog2Social: Social Media Auto Post & Scheduler
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 插件是WordPress开源的一个应用插件。 WordPress插件存在跨站脚本漏洞，该漏洞源于在6.8.7之前的WordPress插件没有在输出到管理页面之前对b2sShowByDate参数进行清理和escape，导致了一个反映的跨站点脚本问题。

AI Predicted 6.1 Difficulty: Easy EPSS 1.44% · P72

Public Exploits 1

Nuclei · 1 CVE-2021-24956.yaml [template]

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2021-24956

Vulnerability Information
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Vulnerability Title
Blog2Social < 6.8.7 - Reflected Cross-Site Scripting
Source: CVE Program / CVE List V5
Vulnerability Description
The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 6.8.7 does not sanitise and escape the b2sShowByDate parameter before outputting it back in an admin page, 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插件存在跨站脚本漏洞，该漏洞源于在6.8.7之前的WordPress插件没有在输出到管理页面之前对b2sShowByDate参数进行清理和escape，导致了一个反映的跨站点脚本问题。
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 Blog2Social: Social Media Auto Post & Scheduler 6.8.7 ~ 6.8.7 -

II. Public POCs for CVE-2021-24956

# POC Description Source Link Shenlong Link
1 The Blog2Social: Social Media Auto Post & Scheduler WordPress plugin before 6.8.7 does not sanitise and escape the b2sShowByDate parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting issue. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24956.yaml POC Details
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III. Intelligence Information for CVE-2021-24956

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Vendor Advisories for CVE-2021-24956 (1)

Same Patch Batch · Unknown · 2021-12-21 · 10 CVEs total

CVE-2021-24981 Directorist – Business Directory Plugin < 7.0.6.2 - CSRF to Remote File Upload
CVE-2021-24941 Icegram < 2.0.5 - Reflected Cross-Site Scripting
CVE-2021-24907 Everest Forms < 1.8.0 - Reflected Cross-Site Scripting
CVE-2021-24849 WCFM - WooCommerce Multivendor Marketplace < 3.4.12 - Unauthenticated SQL Injection
CVE-2021-24846 Ni WooCommerce Custom Order Status < 1.9.7 - Subscriber+ SQL Injection
CVE-2021-24750 WP Visitor Statistics (Real Time Traffic) < 4.8 - Subscriber+ SQL Injection
CVE-2021-24739 Logo Carousel < 3.4.2 - Unauthorised Private Post Access
CVE-2021-24738 Logo Carousel < 3.4.2 - Contributor+ Stored Cross-Site Scripting
CVE-2021-24578 SportsPress < 2.7.9 - Reflected Cross-Site Scripting

IV. Related Vulnerabilities

Same product: Blog2Social: Social Media Auto Post & Scheduler
Same vendor: Unknown
Same weakness: CWE-79

V. Comments for CVE-2021-24956

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