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CVE-2023-4779— User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Quick assessment

Affected
specialk User Submitted Posts – Enable Users to Submit Posts from the Front End
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用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是一个应用插件。 WordPress plugin User Submitted Posts 存在跨站脚本漏洞，该漏洞源于对用户提供的输入清理和输出转义不足，通过 usp_gallery 属性可以造成存储型跨站脚本攻击。

CVSS 6.4 · Medium EPSS 0.38% · P30
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I. Basic Information for CVE-2023-4779

Vulnerability Information
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Vulnerability Title
User Submitted Posts – Enable Users to Submit Posts from the Front End <= 20230811 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Source: CVE Program / CVE List V5
Vulnerability Description
The User Submitted Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's [usp_gallery] shortcode in versions up to, and including, 20230811 due to insufficient input sanitization and output escaping on user supplied attributes like 'before'. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 plugin User Submitted Posts 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用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是一个应用插件。 WordPress plugin User Submitted Posts 存在跨站脚本漏洞，该漏洞源于对用户提供的输入清理和输出转义不足，通过 usp_gallery 属性可以造成存储型跨站脚本攻击。
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
specialk User Submitted Posts – Enable Users to Submit Posts from the Front End * ~ 20230811 -

II. Public POCs for CVE-2023-4779

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III. Intelligence Information for CVE-2023-4779

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Patches & Fixes for CVE-2023-4779 (1)

Vendor Advisories for CVE-2023-4779 (1)

IV. Related Vulnerabilities

Same product: User Submitted Posts – Enable Users to Submit Posts from the Front End
Same vendor: specialk
Same weakness: CWE-79

V. Comments for CVE-2023-4779

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