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CVE-2023-6877— RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Error Message

Quick assessment

Affected
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
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 feedzy-rss-feeds 4.3.3及之前版本存在安全漏洞，该漏洞源于Content-Type 字段输入清理和输出转义不足，允许攻击者在页面中注入任意 Web 脚本。

CVSS 6.4 · Medium EPSS 0.35% · P27
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I. Basic Information for CVE-2023-6877

Vulnerability Information
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Vulnerability Title
RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator <= 4.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Error Message
Source: CVE Program / CVE List V5
Vulnerability Description
The RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcode(s) in all versions up to, and including, 4.3.3 due to insufficient input sanitization and output escaping on the Content-Type field of error messages when retrieving an invalid RSS feed. This makes it possible for authenticated attackers, with contributor-level access and above, 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 feedzy-rss-feeds 安全漏洞
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 feedzy-rss-feeds 4.3.3及之前版本存在安全漏洞，该漏洞源于Content-Type 字段输入清理和输出转义不足，允许攻击者在页面中注入任意 Web 脚本。
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
themeisle RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator * ~ 4.3.3 -

II. Public POCs for CVE-2023-6877

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III. Intelligence Information for CVE-2023-6877

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Patches & Fixes for CVE-2023-6877 (1)

Vendor Advisories for CVE-2023-6877 (1)

IV. Related Vulnerabilities

Same product: RSS Aggregator by Feedzy – Feed to Post, Autoblogging, News & YouTube Video Feeds Aggregator
Same vendor: themeisle
Same weakness: CWE-79

V. Comments for CVE-2023-6877

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